Last updated: 31 December 2004
Subject: tips for a Home Made LPI Focal Reducer Sent: Wednesday, December 29, 2004 00:39:56 From: Dimitri zilber (email@example.com) I'm the happy owner of an ETX 90EC, a skywatcher 80/400 and a skywatcher newton 130/900. Last month I bought an LPI imager in order du complete my EOS D30 whitch is a little heavy for my telescopes. I am really pleased whith the camera but found that a wider FOV should have been better. Because of christmas I really can't spend much much money on a real focal reducer so I've made one with the front lens of my old 8*21 viewfinder. English is not my language so I put some photos in the mail for explanations.And:
There are some samples of the moon (between two snow showers) and of a street light about 50meters away. The acquisition has been made with K3CCDTools in AVI mode.
No post traitment, bmp to jpeg with XnView, and BMP extraction with AVItoBMP Clear Skies, Dimitri
thank you for posting my idea here's a new pic of the moon that I did yesterday with the focal reducer attach to the LPIAnd more:
It is much better than my first try... Capture in AVI with K3CCD 474 frames Processing with registax 75 frames selected and a little wavelet applied regards Dimitri Zilber
I take another pic witch was in CIF mode and also with the focal recucer. This time the frame rate was 15fps witch is not bad at all (almost like a TuCam) and the FOV is almost the same as the LPI without the focal reducer.
I think that I have found my new configuration for imaging saturn tonight : CIF mode (352*288) with the focal reducer at 15fps the atmospheric disturbance was much lighter than at 2fps Dimitri
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