Last updated: 31 March 2007
Sent: Thursday, March 29, 2007 10:09:43 From: Possma Net (email@example.com) I've finished the project yesterday - mounting an ETX-90RA OTA on DS-2000 series mount. (i.e. making an DSX-90 out of an ETX-90RA OTA and a cheaper version of DS-2130 named DSB-2130ATS (from Bresser, with a poor 1m-reflector on the mount).) This job was quite easy to do and really low cost. (1.30 Eur!) I am very pleased with the construction so far - the first impressions last night were really positive - now having a (cheaper than ETX-90EC) ETX-autostar: It found every wanted object without problems and the tracking was perfect for viewing. Plus there is a whole lot more space for cameras attached to the ETX's back than in the original fork-mount. The techincal part: I went to the next home improvement store and got a sheet steel angle for just 1.30 Eur. It measures 10x10x10 cm. I drilled 4 holes for the DS-mount-arm on the one side, and another 2 holes for the photoscrews on the bottom of the ETX OTA on the other one. There already are 4 screws for the DS-arm present, they will fit. And for the ETX OTA the two knurled screws that cap the two threads for the mini-tripod-legs on the side of the ETX-base will perfectly fit into the ETX-OTA's bottom side photo-threads. Finished! I've attached some pictures of the adapter to the email to be published on Your site.
For the future, i'm planning a wedge for my selfmade DSX-90 for longtime astrophotography, and a "version-2.0-OTA-to-mount-adapter" by milling a slot instead of holes, that allows to move the OTA along the line of sight for balancing reasons. Clear skies and greetings from germany, Posma Net.
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