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[Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> Reflectors Previous   Index   Next   Threaded   Pages: 1 eyepiecedropper member Reged: 12/31/11 Loc: aschaffenburg, germany atm gso/zhumell conversion 8"f/6       #5406476 - 09/06/12 12:34 PM Attachment (42 downloads) Edit   Reply   Quote Quick Reply   hi all! i just wanted to show my "half" atm project. my gso low expansion mirror is a very nice one, so i´ve decided to put it in a fiberglass tube of 3,5mm wall thickness and to install a smaller secondary. tube rings are a from skywatcher cause they are some milimeters bigger in diameter. obstruction is 16,5%. 100% fully illuminated field is appr. 9.5mm. kineoptics hc-1 and carbon secondary holder from mr. horst becker/germany with knurled adjustment screws. will drill a little hole opposite of the focuser for exact alignment of the focuser. greets, martin Post Extras:       eyepiecedropper member Reged: 12/31/11 Loc: aschaffenburg, germany Re: atm gso/zhumell conversion 8"f/6 [Re: eyepiecedropper]       #5406482 - 09/06/12 12:36 PM Attachment (36 downloads) Edit   Reply   Quote Quick Reply   the focuser and spider assembly Post Extras:       eyepiecedropper member Reged: 12/31/11 Loc: aschaffenburg, germany Re: atm gso/zhumell conversion 8"f/6 [Re: eyepiecedropper]       #5406496 - 09/06/12 12:44 PM Attachment (31 downloads) Edit   Reply   Quote Quick Reply   the cooler with lots of saw dust ;-) Post Extras:       BWAZ Pooh-Bah Reged: 11/21/05 Loc: CA Re: atm gso/zhumell conversion 8"f/6 [Re: eyepiecedropper]       #5406550 - 09/06/12 01:22 PM Edit   Reply   Quote Quick Reply   Very nice work! I'm interested in the spider, how did you make that? Post Extras:       eyepiecedropper member Reged: 12/31/11 Loc: aschaffenburg, germany Re: atm gso/zhumell conversion 8"f/6 [Re: BWAZ]       #5406640 - 09/06/12 02:10 PM Edit   Reply   Quote Quick Reply   hi, thanks but...he made the spider for me ;-) http://www.drehen-und-mehr.de very enterprising, nice guy i must say. Post Extras:       daveingu sage Reged: 01/24/09 Loc: Guelph, ON Canada Re: atm gso/zhumell conversion 8"f/6 [Re: eyepiecedropper]       #5406770 - 09/06/12 03:27 PM Attachment (19 downloads) Edit   Reply   Quote Quick Reply   Couldn't help but notice the scope on ATM dob stand ,any info on that one? It looks a little like my latest Post Extras:       eyepiecedropper member Reged: 12/31/11 Loc: aschaffenburg, germany Re: atm gso/zhumell conversion 8"f/6 [Re: daveingu]       #5408488 - 09/07/12 02:40 PM Edit   Reply   Quote Quick Reply   hi, dave! you have a very nice dob, like it! that scope in the back is the "spare parts depot" for my atm project ;-) the stand was made by mr. martini/germany. didn´t use it very often since i prefer eq-mounted scopes. http://www.dietermartini.de/ a comment on the mirror. those gso low expansion mirrors -seem- to be very good, not only for the money. could be a bargain. here´s a link: http://www.astrotreff.de/topic.asp?ARCHIVE=true&TOPIC_ID=93829&whichpage=1 have a look here. he sells them with .98 strehl for 350 eur. http://www.fernrohrmarkt.de/product_info.php?info=p194_Hauptspiegel-D8Z-8--f-6-ZeroExp--Premium.html Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 12 registered and 15 anonymous users are browsing this forum. 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