Last updated: 26 April 2005
This page documents the Meade Deep Sky Imager comments, tips, and photos. Contributions welcome. In order to showcase the DSI you may occasionally see images taken with other telescopes on this page.
Subject: DSI-DSI pro Sent: Monday, April 25, 2005 04:38:51 From: firstname.lastname@example.org (email@example.com) I am an amateur astronomer and I need to ask you some questions about Meade DSI. I have a Meade ETX-125 w/UHTC and I want to buy the new Meade Deep Sky Imager pro. First of all I know that LPI has a magnification similar to a 6mm eyepiece. What are the magnifications of DSI and DSI pro? A friend of mine told me that with DSI pro I have to take 4 pictures, each one with a different colour filter but with DSI you take one. Is this true? Do I have to buy the filter set also? I have Meade #3200 Lunar & Planetary Colour Filter Set, are these filters compatible? Which is the most powerful and the best Barlow lens I can use in your opinion? Is the Meade 5x Ultra TX TeleXtender 1.25 Inch Format a good one? And finally do DSI pro worth the money or is the same as DSI? Thanks -- Philippos Isaia email:firstname.lastname@example.org http://www.philippos.netMike here: I don't know about the magnification factor. But for color photographs you do have use the filter set, which is an optional $200 purchase. For the DSI, you may not want to use a Barlow Lens with the ETX; a better choice would be a focal reducer.
Subject: Re: What happend with your Meade DSI Sent: Sunday, April 24, 2005 04:32:39 From: Stephen Bird (email@example.com) Hi apologies for the delay in responding, I have been away in Mallorca using professional telescopes for a week at a big observatory in the mountains there. Certainly different to the ETX! Yes, the problem you are having is described in a number of my posts. I would doubt if a replacement DSI will fix the problem, replacement is BC&F's answer to everything as they have a sale or return agreement with Meade. Unless it is something unforseen, the error you are getting is due to lack of power via the USB port to the DSI. If you read all of my posts for DSI / LPI, search for me by name on the ETX site, you will see all you need to fix or identify your issues. In short though: 1. DSI requires the FULL 500mA power supplied via the computer USB port. 2. Not all computers have USB ports that can supply the full 500mA, some can only supply 100mA. One solution for this is to use a powered hub, that is a powered USB Hub that has its own external plug in power supply. you can purchase these from your local coputer store. 3. If the USB port did not supply the full power when you loaded the drivers by plugging the DSI in first time, you will need to repeat this step when you get the powered hub. 4. On some computers, there are multiple USB ports, but the power supply is shared amongst them all, so if you have another USB device plugged in at the same time as the DSI, then the DSI will not get the full 500mA. the solution is to unplug all other USB devices except the DSI, load the drivers as in 3, and only operate the DSI with no other USB device connected at the same time. 5. Windows 98 does not really work with DSI, I never got it to work properly. LPI no problem, DSI, no way! Windows 2000 and Windows XP are fine. BUT,..... YOU MUST ENSURE THAT YOUR PC HAS ALL THE LATEST UPDATES FROM MICROSOFT'S UPDATE SITE BEFORE YOU LOAD UP THE DSI. ALL OF THEM (EXCEPT FOREIGN LANGUAGE OPTIONS). Do not skip the DSI software options to load .net and other items unless you have a later version already on your PC. 6. Finally some PC's have USB ports on the back which are FULL power, and a USB port on the front as well for convenience. The front mounted ports sometimes are not full power, so beware. As it happens I returned my DSI because it had two areas of hot pixels 16 x 8 in size and these sort of faults cannot be fixed with software, like single pixel or line artifacts can. Maybe I will get another one, though BC&F has been out of stock for 4 months, or maybe I will trade up and get something that does not use second grade commercial CCD's. On E-Bay you can get them from the US for 185 UK pounds as opposed to 269 UK pounds from BC&F. Alternately, the new DSI enhanced model is out soon. Hope this helps. Regards Stephen Bird ----- Original Message ----- From: karl Hi my name is Karl and i saw a post you put on a website about a problem you were having with your Meade DSI ( error sting code ). I have the same problem, i was wondering if you ever got it sorted or if you got a DSI from the USA like you said you might, if you did get a new DSI did you still have the same problem? I rang BC&F today who told me to send the DSI back and get a new one but im not sure if that is going to work thats why i sent you this email to see what happend with you. Thank you for your time. Karl.
Subject: question Sent: Friday, April 22, 2005 23:56:23 From: Jorgen vd berg (firstname.lastname@example.org) I have a question about a meade deepsky imager. This week i received it to use it on my lxd55 sn-8 with uhtc. Ithought finally now i can go start imaging. But then asl always problems occur, when i hooked up my camera and placed it in my eyepiece holder i got a live image on my screen. I pointed the telescope to the sky it was al black. but then within 6 or 7 secondes i always get a white spot that fills half my live screen, can you help me with this. This spot occurs wether i use default settings or adjusted i have a pentium 2.4 gigahertz 512 mb ddr ram 20 gig harddrive usb 1.1 jorgenMike here: First, PLEASE read the Email Etiquette item on the ETX Home Page; subjects like "question" can be treated as SPAM and your message can be DELETED UNREAD or even returned as undeliverable.
Subject: Mac use with a Meade DSI Sent: Sunday, April 17, 2005 18:43:31 From: Peter (peter@EgyptianDiving.com) I was browsing the web and came across some of your posts. I have a Powerbook G4 and want to connect it to my new LXD75 8" SN with autostar and a DSI. (I am awaiting the DS) What cables do you use, and did you have any problems I should be aware of? PS: I'm in dark sky heaven, New Mexico, and just itching to take some photos! Thanks! PeterMike here: I don't have a DSI myself but have used the LPI with a Mac. There is a driver and some apps for native use of the LPI (see the article "LPI with Mac OS X" on the Helpful Information: Astrophotography page). For the DSI you would need Virtual PC with Windows.
Subject: Guest Gallery Jupiter Sent: Friday, April 15, 2005 00:50:57 From: Bernhard Rems (email@example.com) This was first light for the Meade DSI on my LX90 (2x Barlow). There are better pics of Jupiter on your pages for sure, but this shows what you can achieve with the DSI on planets on the first night out with no previous experience with CCD photography. I have also tried my luck on M66 this night (April 14th, 2005), and I even recorded the core of the galaxy, but due to inferior transparency (2mag visually) and my lack of experience, the picture of the galaxy is inferior. I am sure that I will get better results on deep sky objects with more experience, and I want to add that I think that the DSI is worth every cent and an ideal instrument to get into CCD astronomy.
Subject: RE: DSI software issues Sent: Tuesday, April 5, 2005 12:09:28 From: Juarez, Benito (firstname.lastname@example.org) Problem was fixed deleting the Meade Inst --> Envisage entry in the Windows registry editor. My guess is that the "Settings" fields in the DSI software doesn't handles international characters, therefore an error is displayed when trying to save the data. Anyway, after solving this , I was able to take my first pictures with the DSI. It was taken with my ETX125-UHTC, IR filter, Highly light polluted and hazy skies, Two different exposures to get Jupiter and the moons with very basic enhancing and edition in Photoshop. Not too bad to be my first one, I guess. Kind Regards Benito
Subject: RE: Which telescope to use with Meade DSI. Sent: Tuesday, April 5, 2005 07:55:05 From: Natarajan, Vishwanath (email@example.com) Thank you very much for your reply. Would an ETX125 be a good choice? I know it stretches mu budget a bit. What is your opinion? I read a few posts on the Internet saying that ETX 125 is not suited for Astrophotogrphy. Let me know.Mike here: The ETX-125 will be fine with the DSI. As to the ETX not being good for astrophotography, well check out the examples on the galleries. Lots of excellent ones done with the ETX-125 AND SMALLER ETX models.
Subject: Which telescope to use with Meade DSI. Sent: Monday, April 4, 2005 05:58:03 From: Natarajan, Vishwanath (firstname.lastname@example.org) I am new to this fascinating world of astrophotography and I can across your site on the web. I am planning to get into this and was wondering if you could let me know from your experience as to which is thetelescope to use with the Meade DSI? My budget is around 800-1000 USD and my main intention is to take photographs of deep space objects. thank you very much for your help. Thanks, VishwanathMike here: I don't have a DSI but it will work fine with most any of the Autostar capable telescopes. That would be an ETX, LXD75, LX90, or LX200GPS. With your budget and for DSO use you might want to consider a LXD75 SN model.
Subject: DSI software issues Sent: Friday, April 1, 2005 19:12:02 From: Juarez, Benito (email@example.com) After install and update (from Meade site) the autostar suite, autostar IP and DSI driver several times, I'm still having the same error message. Hope someone on your helpful site can provide a solution. When using the autostar DSI program, as soon as I hit the "Start" button for taking pictures I get this error message : "FILE SAVE ERROR STATUS=207". My laptop has 20 Gb of free space, so disk room is not a problem , any ideas ? Regards Benito
Subject: Focus and fixing a Meade DSI to an ETX90 Sent: Wednesday, March 23, 2005 10:24:38 From: Jose Narro (firstname.lastname@example.org) I just received my Meade DSI ans soon found that fixing it into the eyepiece with the cable looking to the left is not possible, it just not go all the way. I am also having some problems trying to focus, I found that using the IR filter I just cant see a thing, only a beautiful abstract colors. When I took this filter out I was able to see terrestrial objects, but focusing even the moon is not possible. Is there some document or photos showing how ti fix this and focus? I appreciate your help with this. Jose Narro Greetings from Monterrey, Mexico.Mike here: The Helpful Information: Astrophotography page has several DSI items. Check them out.
Subject: Re: ETX-125 & DSI Question Sent: Wednesday, March 23, 2005 00:16:07 From: Stephen Bird (email@example.com) Lack of sharp focus on celestial objects is a combination of things, item 3 being an extra problem with the DSI design: 1. Atmospheric turbulence - As the atmosphere is not always clear and steady and varies all the time, sometimes more dramatically than others, you can get poor and varying focus in real time imaging of celestial objects. 2. The difference between good focus and poor focus on celestial objects with the ETX depends on minute adjustments of either the manual focus control, or the electronic focusser if you have one. Both are quite coarse adjustments, and the manual focus control will cause scope vibrations. For some time, I have been trying to come up with a focus counter, a simple electronic or electromechanical geared number display, connected to the focus assembly, so that when you reach focus you can record the 6 digit number, and return to it or adjust it a few digits each way. no luck yet I'm afraid! 3. The nose tube of the DSI is a strange design and has poor tolerances on its overall diameter. If you look at it, it has two (very approximately!) 1.25" shoulders, one at the top and one at the bottom. In between the tube narrows to considerably less than 1.25" diameter. This means that certainly for the ETX105 and ETX90, which do not allow the DSI to seat fully downwards in the eyepiece port unless you remove the viewfinder or modify it, only the lower shoulder on the nose tube is in the eyepiece port, the upper shoulder being above the port. This allows the DSI to move from side to side, pivoting on the lower shoulder. When you tighten the eyepiece port grubscrew, the plane of the DSI image sensor is not at a perfect right angle to the eyepiece port. So, the focus varies across any image. For 3., when using a terrestrial image, the problem is less apparent as you only have a couple of hundred feet of unsteady atmosphere in the way. But for celestial images you have many miles of unsteady atmosphere. The fix is to change the nosepiece for a better fitting one off the Meade or BC&F camera adaptor, or modify the viewfinder as Charles Washington has done. Finally, the IR filter has to align with the length and breadth of the rectangular image sensor, just make sure you don't get finger prints on the vital part of it when realigning it. Hope this helps. Regards Stephen Bird
Subject: ETX-125 & DSI Question Sent: Monday, March 21, 2005 14:11:35 From: Jim Holland (firstname.lastname@example.org) Does anyone out there have any experience with their DSI not reaching a good sharp focus when inserting the imager into the slot for the eye piece of the 125? Seems fine on terrestial objects, but on celestial object I just don't get a sharp focus. Anyone with the same problem? Also does anyone have a pictures of the IR Filter and where it is place in the nose piece of the imager? Thanks Jim Holland
Subject: Fw: DSI & ETX-125 Sent: Sunday, March 20, 2005 11:33:17 From: Charles Washington (email@example.com) I have had a couple of questions sent to me from people who have caught sight of my humble efforts. I thought that this from Jim Holland was pertinent to answer and so I would like to post them to you by way of a progress report. Jim's other enquiry was regarding a focal reducer. I made some enquires a little while ago to a Meade dealer in the USA and was informed that that focal reducers were really only suitable for SCT's and not MCT's but for me it is a point in question, because when I finally get around to deep sky instead of the solar system I rather get the feeling that it would be a necessity. I have some lovely lunar pix but would love to have a broader field of vision. I have through your site seen some inventive ideas but wonder if there is an off the shelf item. It seems to me that the DSI has a magnification of about a 6 mm eyepiece, which is a narrow field of vision. Thanks yet again, it is very considerate of you to take the time and make the effort to circulate my endeavours and attempt to answer my simple but for me important questions. Kind regards Charles Washington (UK) ----- Original Message ----- From: "Charles Washington" To: "Jim Holland" Connected everything up this afternoon and went on a terrestrial view not my cup of tea but I to have been curious as to what the outcome would be. With the DSI mounted with the USB lead to the left (rear view) as per the Meade instructions is correct. The image is upright. My Autostar is set up so 'arrow up' is north and 'arrow left' is west etc. When I went into the Autostar suite and opened up 'Image' tab followed by 'DSI imaging' in the drop down menu the Autostar Envisage program appears. Clicked on the 'telescope' tab followed by 'connect' and got access to the telescope controls. Glad to say the 'arrow up' button is north and 'arrow left' is west the same as my Autostar. Yipeeeeee Using hold and dragging on the arrows increases and decreases the speed of movement and can be used very sensitively. If you have an electric focuser (when it is plugged into the control panel of the 'scope) you can also control it using the in/out arrows, this however is single speed and quite slow I think more so than using the controller itself. Being slow is best but a choice would be better. The adapted mount to offset the finderscope works very nicely but it is very sensitive to the touch and feel that I will now make another using 10mm aluminium plate with a snugger fit ( instead of 6mm) for the main section and moving it out (lengthening) by another 10mm as well for even easier access when plugging in the USB lead. If you want any pixs of the adaptation or a view of the control panel pages from the handbook let me know and I will forward some on. I am quite new to astronomy and later in life than I would like but I feel quite pleased with my efforts so far. The whole idea of taking up the hobby was to try and take astronomical pictures and at long last it seems that I am now prepared and able. Kind regards Charles ----- Original Message ----- From: "Jim Holland" To: "Charles Washington" Sent: Saturday, March 19, 2005 1:42 PM Subject: RE: DSI & ETX-125 Thanks for the response. No, I did not see the bracket you had made. Idea seems sound enough. I may try it as well. One follow up question: are you using a focal reducer/field expander between the DSI camera and scope? Regards Jim -----Original Message----- From: Charles Washington To: Jim Holland Subject: Re: DSI & ETX-125 Sorry I have not replied sooner. Since I have made the new bracket which takes the finder out of the way I have not had a chance to test it other than to align it with the 'scope. That seems to work ok. I hope to get all the kit out in the next couple of days wind, rain, hail, sleet, snow and clouds permitting. If nothing else it is a frustrating hobby. I will be in touch with you as soon as I have something to report. I don't know if you have seen the latest pix that Mike Weasner has posted for me so I have put the URL below. I hope that all will be good and that I might be able to offer a small but practical solution. Kindest regards Charles http://www.weasner.com/etx/astrophotography/2005/finderscope-dsi.html ----- Original Message ----- From: "Jim Holland" Charles, I noticed you posted on Weasners site about mounting the DSI to a 125, Did you ever find an answer about the orientation of DSI into the eye piece holder? And were you able to get a sharp focus mounting it there in a "wrong" (according to the documentation) orientation? regards Jim HollandMike here: Meade's focal reducer is SCT only but you can use the Shutan (Apogee) or Scopetronix ones on an ETX. The Shutan one (Wide Field Adapter) is discussed on the Accessory Reviews: Showcase Products page.
Subject: Re: meade dsi common problem. "No imagers". A solution of sorts. Sent: Saturday, March 19, 2005 01:34:07 From: Stephen Bird (firstname.lastname@example.org) The big long message with the error string is cured by using a powered hub to both load the drivers and run the DSI proper. The problem there is as has been said, simply not enough power to the DSI. I have a desktop that has a front mounted USB port that is not a fully powered port and you see the long warning as the DSI is connected, use a fully powered hub or plug into the rear ports and the DSI works fine. Checking a few USB specs, I have found that some PC's and some hubs can only supply 100mA. You need to look for the magic words "fully powered". I did mention the lap top power issue a while back, it is possible to set up a number of power profiles via the control panel, I have one for my lap top called "Telescope" and its sets the Fujitsu Power Management profile to fully powered regardless of internal or external power. I also use an invertor on a 12 volt power pack when in the field. As to Meade's less than helpful attitude, that is to hide their embarrasment. Look for the clues, DSI billed as needing no external power supply and competing with $1000 cameras (all of which do???). Look at their website advert for the RC400 scope, key feature a "FULLY POWERED USB 2 HUB". Now why would they need that, adding $10 per unit, hitting the profit margins? I would be embarrassed and go into defence mode faced with such a dilemma of saying my $299 (just under the $300 magic figure of affordability) needed a powered hub for $40, a power pack to drive it for $100 and an invertor to interface the two for $50). Suddenly it does not sound such a good deal. Still I am sending my DSI back for a refund as it has 2 areas of dead pixels 16 x 8 in size that immediately saturate at exposures of 0.25 seconds, increase that and blooming takes out even more pixels. BC&F in the UK has not had any new DSI's since December 2004, so can't replace it despite 10 weeks of me moaning on a bi-weekly basis. If i do buy another one, it will be direct from the US where they cost me 185 UK pounds rather than the 269 UK pounds we have to pay here, more than $100 saving. failing that I may just buy a SBIG and have done with it, at least they work even if they are 5 times the price! Regards Stephen Bird
Subject: DSI noise bars Sent: Friday, March 18, 2005 19:30:41 From: Don Davies (DonDavies@verizon.net) I have a very strange problem using the DSI that I hope you can shed some light on. It appears that the automatic subtraction of the dark pixels at the beginning of a scan line doesn't stay on. This happens on both a laptop and a tower running Windows XP (Home), but not on a tower running Win 98 SE. The symptom is horizontal grey bars of amplitude ~200 counts, completely random in placement on the frame. If I power up the computer with the camera plugged in, it works well (without the bars) and will continue to run that way if the integration time is short <~1 sec, but if I integrate for a few seconds the bars will return, and persist even with short integration times. The only way to get rid of them is to power off the computer and re-power it with the camera plugged in. I have returned my original camera to Oceanside Optical and they immediately replaced it with a new unit. (By the way, absolutely great service!) Unfortunately it behaves the very same way. It almost like the USB driver is dropping power and some latch in the camera is getting set wrong ... This problem exists with the latest version of the software downloaded from Meade's site. Any ideas? Has anyone else seen this problem? It is a bit subtle with long integrations because the bars don't scale with integration time and so are not so obvious if the image is autoscaled, and especially if many frames are added. But it is very obnoxious at short frame rates if it gets into that mode. -Don Davies
Subject: Re: meade dsi common problem. "No imagers". A solution of sorts. Sent: Thursday, March 17, 2005 23:03:11 From: Hyde, Andrew (email@example.com) following on from an email I received I think some of the issues may lie in the power consumption of the DSI. Understandably so it's greedy. I use a laptop. If I have the power cord plugged in when I start Autostar and the DSI I get the "no imagers" message. If I un plug the power cord then plug in the DSI and start Autostar every thing works just fine. .My theory is that the pc gives primacy to recharging and cannot change the way it prioritises power distribution to peripherals. A solution may be to buy an idependantly powered USB port Now all I have to do is a blasted Belkin serial to USB adapter to work (two weeks and counting)....... -----Original Message----- From: Matt Saw your message on Weasner's site pertaining to the "no imagers" message. I too have a problem with the dsi working within autostart suite. I got past the problem saying "no imagers" when opening dsi by doing several things, none of which I can remember now (or want to remember as this whole thing has been a nightmare). But now when I open dsi I get an even bigger error message with programming language I don't understand saying something to the effect that the "device driver not responding" blah, blah,blah. I've updated through meade's website, updated my computer through microsoft's web site, did everything imaginable but to no avail. What has even stung worse is the type of response I get from Meade's tech. support guy. He's rude and has hung up on me while on hold several times- and I was being polite to him! Well, I don't mean to take up your time, but was wondering whether you solved your problem? I'm either going to send the dsi back to meade for diagnostics (afraid to do that- given the attitude of their "customer support") or sell it on ebay. Hopefully I can fix it myself if it is a computer problem (doubting that). Anyway, if you have any tidbits of advice I would sure appreciate it. Happy St. Patty's Day! Regards, MattMike here: My Keyspan adapter works fine with my Macintosh laptop.
Subject: Re: DSI DIY Sent: Tuesday, March 8, 2005 23:52:25 From: Stephen Bird (firstname.lastname@example.org) Not wanting to stifle the inventive streak, but the DSI ordinarily should be positioned in the ETX eyepiece port with the USB cable socket pointing to the right (directly away from the viewfinder) and NOT to the left (towards the viewfinder), as per the Meade instructions. This reduces the problem of fouling of the DSI body on the ETX finderscope bracket. This is because the DSI nosepiece is offset from the centre of the DSI camera body. If Meade had increased this offset by just another 2mm, the problem would not exist at all (when installed with the USB socket pointing to the right). This small amount of fouling can be easily eliminated by putting a parfocal ring on the DSI nosepiece, which raises the DSI in the ETX eyepiece tube by 2mm and thus the DSI clears the finderscope bracket. A better solution that improves sharp focus across the plane of the DSI image, is to change the badly designed, poorly fitting plastic nosepiece, for the much better quality item from the Meade or BC&F camera adaptor. These have an even 1.25" diameter along their whole length (with the T thread to match the DSI camera body), unlike the DSI item, and are thus a snug fit in the ETX eyepiece tube. The following photo shows the DSI oriented with the USB port to the right of the viewfinder (cable is not connected). You can just make out the parfocal ring with its grub screw directly above the ETX eyepiece port grub screw on the right of the picture. On the left of the picture you can just about see that the finder bracket screw in now clear of the DSI camera body. The viewfinder is rotated a few degrees anticlockwise in its bracket to further improve / enable adequate clearance.
Regards Stephen Bird Subject: DSI DIY Sent: Monday, March 7, 2005 11:49:29 From: Charles Washington (email@example.com) To add to the fun and games with using a DSI on an ETX 125 I have made a simple but effective modification. Using existing screw holes I made a simple but rigid bracket to move the finder over a tad and allow for the USB cable to be plugged in. I intend to make another with a with a more appealing shape and better workmanship but the idea is sound. Regards Charles Washington (UK)
Subject: DSI Experience Sent: Monday, March 7, 2005 16:23:44 From: Mike Snowden (firstname.lastname@example.org) I've now picked up an AC547 adaptor from www.telescopehouse.co.uk /Astro Engineering at their new showroom opening party (shame about the snow stopping the observing), and replaced the nosepiece tube on the DSI. Combined with a plain glass slip, to protect the IR filter (AC535), this significantly lengthens the tube, and it seems to sit MUCH more stably in the eyepiece. (Thanks to Steven Bird for this tip). The only disadvantage is that the cover that used to be overtight on the original tube is now loose, so I'm now trying the slip box - there is a snug foam ring to grip the filter, so it should stay on, but by being square has some edges to leverage it off. The new tube assembly is also too deep to fit the original box, so I think I'm going to have to go foam carving.... Setting up alignment tightly is CRITICAL with the DSI. I've found it next to impossible to get it right against a sky, but parfocalising should make this possible. Currently I use a reticule eyepiece and make sure the finder (mounted pointing to the left) and the eyepiece are dead on. Then I get the DSI in and focused up (USB cable to the right), and I can usually find a nice target like Saturn fairly quickly. I suspect what I should do is work out some decent settings for stars, so I can find a field without waiting for the auto-exposure to recognise I have stars, but I haven't got there yet. One suggested improvement for the DSI software would be a spiral/ladder search pattern, with a "pause and stabilize" synced to the live shots. I'm still not sure how much image degradation I am getting with my flip mirror scratches. I'm tempted to wait till summer, then just replace anyway and stop worrying about them. I've also picked up a Meade SCT to 1.25" adaptor to allow some prime focus work. Once Jupiter gets a little higher, I'll try some comparisons and see what the direct vs flipped result is. One quick calculation: used in the vertical, my ETX-105 UHTC is very roughly 1 arc-second per pixel - from here you can extrapolate fields of view. Things I still haven't got right - all tips gratefully accepted: * All my shots of Saturn are still over-exposed. I haven't got the knack of setting exposure/gain to get colours into the image. I suspect I'm still mostly in auto mode. I can't find the tips mentioned on this site to sort this out. * Going between the AutoStar Suite and the DSI envisage, it doesn't seem to pass over control of the scope. I have to launch straight into the DSI, then I can get into a state, where, because I have to use the handset to find the next target, the handset seems locked out. * I still can't get "centre target" to work. I have reset and retrained, but I don't know if it has helped yet, due to the above handover problem... Incidentally, I was told at the party that if you track the image, then derotation software is invoked as the images are stacked. A good reason to track.... Something I want to know about the software. When using "dark frame subtraction", I know that best results should be obtained by getting a fresh set along with the observing session. However, if I don't get new ones (saving 8 minutes observing time, and knocking of the scope to black it out, how does it match the right ones? Is it "closest temperature for that exposure time"? In which case, filling in the dialog box is important if I don't actually take a fresh set (in which case the temp in the dialog will just carry across both... Finally, the latest toys from Astro Engineering are "Camera lens and cradle adaptor kit" kits (Pentax/Olympus OM1/Nikon AL/Canon EOS, AC593-596), for using a normal SLR lens with the DSI. Useful for wide-field or terrestrial use, as people have commented on this site. They were using them to show off the capabilities of the DSI in daylight. MikeMike here: I would guess that the most recent dark frame is the one that is used.
Subject: Glad to find this site! Sent: Thursday, March 3, 2005 22:37:22 From: Draper,Richard A (email@example.com) After having some of the same problems others have had with connectivity issues (I sent my dsi back to meade due to the USB connection/cable being messed up), and also one feeble attempt at imaging saturn (which like another person's complaint came out badly overexposed) I found your site and it helped educate me, and remove discouragement since I was not alone. Here's my second try at saturn with an old 8" lx200. One question I have related to going back to live mode after an image has been taken. I don't see how that is done, w/o closing window and reopening. W/O doing that, the previous image is on the screen and no live shot. removed auto contrast and set exposure to .0442 - I haven't learned about most controls yet. Also agree that focusing is difficult and will use the suggestions found on your site to create a mask. Thanks. Rick DraperMike here: Glad you like the Site and that you found it. BUT as noted on the ETX Home Page, PLEASE PLEASE PLEASE read the Email Etiquette page; your message was originally deleted UNREAD as SPAM due to the subject entry. Thanks for understanding.
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