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[Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> Classic Telescopes Previous   Index   Next   Threaded   Pages: 1 | 2 | (show all) mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan This One Came In Mail Today Brandon 4" F/1555       #5438746 - 09/24/12 08:40 PM Attachment (99 downloads) Edit   Reply   Quote Quick Reply   just the lens....Brandon 4" f=1555 wrapped metal tape around cell and dropped it in my 4" unitron than taped it in place...no Collimation but i checked and all 3 circles were touching...not to bad but not spot on. took it up to 222 on moon and it has great views. this lens was made somewhere around 1948. only a few were made.(100) no color on moon unless i take it out of focus then just barely. the spacing is around a inch between crown and flint. it needs a good cleaning and i will make a cell to fit unitron tube. unitron has been sitting without drawtube for a while so i made one out of brass last week. it was made with thick wall tubing and now its about .030 wall and slides better than the original one. woke up one morning and was having my coffee and checking the bay...and there it was...buy it now. here are a few pics. Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5438747 - 09/24/12 08:40 PM Attachment (60 downloads) Edit   Reply   Quote Quick Reply   another Edited by mustgobigger (09/24/12 08:41 PM) Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5438748 - 09/24/12 08:41 PM Attachment (66 downloads) Edit   Reply   Quote Quick Reply   patsy viewing moon Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5438751 - 09/24/12 08:42 PM Attachment (52 downloads) Edit   Reply   Quote Quick Reply   drawtube i made...just put bees wax on after 400 finish and scotchbrite. Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5438752 - 09/24/12 08:44 PM Attachment (57 downloads) Edit   Reply   Quote Quick Reply   the view Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5438755 - 09/24/12 08:45 PM Attachment (50 downloads) Edit   Reply   Quote Quick Reply   last one notice the aluminum block cradle is sitting on i made that so my goto can drop down in slot like goto mount.. ..works great. Edited by mustgobigger (09/24/12 08:47 PM) Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5444022 - 09/27/12 06:59 PM Attachment (36 downloads) Edit   Reply   Quote Quick Reply   did some modifications to an old rear unitron i bought from brian ...AKA happy idiot. i did a tinsley like cell as it has radius on both halves concave and convex to help center front half of cell while collimating optics. here are a few parts Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5444027 - 09/27/12 07:02 PM Attachment (26 downloads) Edit   Reply   Quote Quick Reply   still have to match tabs as i left them a little big till i fitted everything. going to paint and blacken after doing a little viewing tonight. i modified inside of unitron part and fabed the other half. made new springs and rethreaded the unitron part. Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5444028 - 09/27/12 07:03 PM Attachment (24 downloads) Edit   Reply   Quote Quick Reply   unitron inside...lower area that is cut has slight concave. Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5444031 - 09/27/12 07:04 PM Attachment (24 downloads) Edit   Reply   Quote Quick Reply   assembled...cell just screws on to part i fabricated Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5444036 - 09/27/12 07:05 PM Attachment (21 downloads) Edit   Reply   Quote Quick Reply   on the ota...i left just a little of original lip to seat tube. Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5444039 - 09/27/12 07:07 PM Attachment (32 downloads) Edit   Reply   Quote Quick Reply   did collimation in about 2 minutes and still on target with homemade drawtube extended. Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5444045 - 09/27/12 07:10 PM Attachment (29 downloads) Edit   Reply   Quote Quick Reply   hopefully i will get to powdercoaters this week and have mount ...pier and telescope done sometime next week.... Edited by mustgobigger (09/27/12 07:11 PM) Post Extras:       starman876 Carpal Tunnel Reged: 04/28/08 Loc: VA Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5444149 - 09/27/12 08:22 PM Edit   Reply   Quote Quick Reply   as always nice work Brian. Post Extras:       Jae scholastic sledgehammer Reged: 04/13/06 Loc: New England Re: This One Came In Mail Today Brandon 4" F/1555 [Re: starman876]       #5445401 - 09/28/12 03:23 PM Edit   Reply   Quote Quick Reply   Excellent ! Very nice find, Brian. Post Extras:       Dr Morbius Post Laureate Reged: 02/06/07 Loc: ManorvilleNY-but not for long Re: This One Came In Mail Today Brandon 4" F/1555 [Re: Jae]       #5446067 - 09/29/12 12:00 AM Edit   Reply   Quote Quick Reply   I must say, you do good work! Post Extras:       akman1955 Carpal Tunnel Reged: 09/07/09 Loc: Alaska, USA Re: This One Came In Mail Today Brandon 4" F/1555 [Re: Dr Morbius]       #5447499 - 09/29/12 08:54 PM Edit   Reply   Quote Quick Reply   Brian great work as always!! still have the "rare" polarex compact?? i have never seen another one.john Post Extras:       mustgobigger Post Laureate Reged: 06/12/07 Loc: Michigan Re: This One Came In Mail Today Brandon 4" F/1555 [Re: akman1955]       #5447952 - 09/30/12 05:46 AM Edit   Reply   Quote Quick Reply   Thanks guys, John...yes I do.. .even found a polarex drive for my 142. Never finished box yet..its holding Dew shield for Ap. Post Extras:       JWW Pooh-Bah Reged: 12/12/05 Loc: Arizona or Mexico hard to tell Re: This One Came In Mail Today Brandon 4" F/1555 [Re: mustgobigger]       #5448618 - 09/30/12 02:40 PM Edit   Reply   Quote Quick Reply   Sick ... Post Extras:       clintwhitman Caveman Reged: 01/01/07 Loc: CALI SoEasyACavemanCanSlewIt Re: This One Came In Mail Today Brandon 4" F/1555 [Re: JWW]       #5519246 - 11/14/12 09:31 AM Edit   Reply   Quote Quick Reply   Very nice Brian!! BrandonTron Post Extras:       Pages: 1 | 2 | (show all) Previous   Index   Next   Threaded   Extra information 17 registered and 15 anonymous users are browsing this forum. 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