You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar

Observing >> Solar Previous   Index   Next   Threaded

Pages: 1 Keith sage Reged: 05/14/05 Loc: Costa Mesa, CA USA TV 2.5x powermate with BF10 on pronto?       #5515533 - 11/12/12 06:40 AM Edit   Reply   Quote Quick Reply   I have not yet tested this, because I do not have a sol-searcher yet, so my 60 has not yet been mounted to my pronto. Before deciding on trying to sell my maxscope 60 OTA, I wanted to make sure I would be able to reach focus with a DSLR with my BF10. I am pretty sure threading a Cmax barlow lens attachement to a 1.25" T adapter/nosepiece would work OK, or the Cemax barlow itself, also along with a 1.25" t adapter. I do not have the cemax (and hesitated on my last chance to get the taiwan version of it), and I would prefer not to use 1.25" T adapter (cheezeballs), so I figured my 2.5x powermate with T-ring adapter might be the option. Technically it should be parfocal with an eyepiece, so that should help focus issues. But will it make the effective focal length (1200mm) too long for the BF10? I figure since the PMT is amplifying after the BF10, it might not be an issue (free lunch perhaps?). I have a cheapie GSO shorty barlow, which is basically the cemax but with standard coatings, so I guess I could use that if I had to, but prefer to avoid the 1.25" nose/setcrew combo anyway. Has anyone tried this? Also, is it safe to use a barlow or powermate before the BF? I know this would limit the BF10's field, but is there any risk to the coatings having the unfiltered IR going through the glass? Any experience would be appreciated, thanks! Post Extras:       Philip Levine sage Reged: 03/22/07 Loc: near Boston, MA Re: TV 2.5x powermate with BF10 on pronto? [Re: Keith]       #5516754 - 11/12/12 09:05 PM Edit   Reply   Quote Quick Reply   Hi Keith, I have a Pronto with 60mm Coronado SolarMax II H-alpha and BF 10. I have not done any astrophotography, but can tell you I have used a TV 2.5x Powermate and 15mm plossl inserted into the BF10 diagonal. Not only was I able to reach focus, but the combo of TV 2.5x Powermate and 15mm plossl produced superb results, much more detail against a black "sky". This combo gave me the best solar views by far, than any single eyepiece or other combination of Powermate and any other eyepiece. What I do not remember, however, is if I used my short TeleVue tube extender ($25 ?), before the BF10, in order to reach focus. Phil Post Extras:       Keith sage Reged: 05/14/05 Loc: Costa Mesa, CA USA Re: TV 2.5x powermate with BF10 on pronto? [Re: Philip Levine]       #5519088 - 11/14/12 05:45 AM Edit   Reply   Quote Quick Reply   anybody tried it with the t ring adapter and a DSLR? Post Extras:       Pages: 1

Previous   Index   Next   Threaded

Extra information 4 registered and 6 anonymous users are browsing this forum. Moderator:  Bowmoreman, KWB  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 279 Jump to *Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Celestial Events*General Astronomy* -----   Beginners Forum   General Observing and Astronomy   Outreach   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning and Intermediate Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   NEO   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Speciality Forums* -----   Arizona Science and Astronomy Expo   NEAF (Northeast Astronomy Forum) and NEAIC (Northeast Astro Imaging Conference)   AstroArt   Astronomy Clubs and Star Parties   Astronomy Software & Computers   AstroWebsites   Science! Astronomy & Space Exploration, and Others   Space Rocks   Stellar Media*Swap and Shop* -----   Shop and Swap Audio Components*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements*International Year of Astronomy 2009 - Forums are now closed.* -----   IYA Archive Info

CN Forums Home