You are not logged in. [Login] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Observing >> Solar Previous   Index   Next   Threaded   Pages: 1 Mozhoven scholastic sledgehammer Reged: 05/26/05 Posts: 884 Loc: Middletown, CT 17mm Hyperion won't come to focus in my PST...       #3317367 - 09/05/09 05:47 PM Edit   Reply   Quote Quick Reply   Hello, I just bought a pair of 17mm Hyperions to use with my binoviewer currently on it's way to my home. In the meantime, I wanted to try them out mono in my PST. To my dismay, they won't come to focus. It's close, but not close enough. (actually, I accidently unscrewed the focus knob when I got to the end, luckily it screwed back on easily and doesn't seem to be any worse for the wear) Basically, I'm concerned that they won't come to focus in my Denk binos with a PST corrector. Will there be some differences focus-wise that this combo will give me that will allow proper focus? Or is this a known problem? -------------------- Jeremy Davis Sculptor & Certified Binoviewer Addict (CBA) Orion XT12i - 12" f/4.9 "Alfred E. Newtonian" Wyorock Custom Crayford Denk Standards w/Dual PxS PST (w/the "Good" Gold Objective) 12x60 Oberwerk Binos www.jdavisgallery.com Post Extras:       j3ffr0 sage Reged: 07/06/08 Posts: 425 Loc: Virginia Re: 17mm Hyperion won't come to focus in my PST... [Re: Mozhoven]       #3317957 - 09/06/09 01:57 AM Edit   Reply   Quote Quick Reply   FWIW I've had problems with some EPs coming to focus in my PST. UO volcano top orthos will not focus in mine. -------------------- 10" Dob, 127mm Mak, 120mm f5 achro, PST 35, 24 Panoptic; 16, 13, 9, 3-6 Nagler 15, 10, 7.5, 5, 3.8 Ultrascopic 20, 15, 9, 6 Expanse Post Extras:       Mozhoven scholastic sledgehammer Reged: 05/26/05 Posts: 884 Loc: Middletown, CT Re: 17mm Hyperion won't come to focus in my PST... [Re: j3ffr0]       #3318094 - 09/06/09 07:53 AM Edit   Reply   Quote Quick Reply   Can this problem be solved with a barlow? (like a binoviewer in a newt) Unfortunately, I don't have one right now to try. -------------------- Jeremy Davis Sculptor & Certified Binoviewer Addict (CBA) Orion XT12i - 12" f/4.9 "Alfred E. Newtonian" Wyorock Custom Crayford Denk Standards w/Dual PxS PST (w/the "Good" Gold Objective) 12x60 Oberwerk Binos www.jdavisgallery.com Post Extras:       molniyabeer Confused and Asleep Reged: 01/08/05 Posts: 2559 Loc: Central Coast, California Re: 17mm Hyperion won't come to focus in my PST... [Re: Mozhoven]       #3318400 - 09/06/09 12:07 PM Edit   Reply   Quote Quick Reply   Odd. I've used my 8mm and 24mm and didn't note any issues. The 8mm is my favorite general purpose eyepiece with the PST. -------------------- Steve 16" Meade LightBridge (Beowulf) 10" Hardin DSH, StarMax 127mm Mak, PST H-a Oberwerk 11 x 70 binocs, Tasco 10 x 50 binocs Santa Maria Clear Sky Clock Figueroa Mt Clear Sky Clock Post Extras:       Ralph Marantino Postmaster Reged: 05/01/05 Posts: 6331 Loc: Old Bridge, New Jersey Re: 17mm Hyperion won't come to focus in my PST... [Re: Mozhoven]       #3318714 - 09/06/09 03:27 PM Edit   Reply   Quote Quick Reply   There MUST be a club thast you can hook up with in your area to help you out you dont HAVE to join to get practical on the spot education. -------------------- Lunt H-alpha LS100THa/B3400 Rockland Astronomy Club Member BAA Solar Section Central Appalachian Astronomy Club Astronomical League DSPST,PST & 70mm Coronado Cal K telescope.2.2A Zeiss 2 inch prism diagonal&Zeiss Zoom EP 2inch APM Herschel Wedge in a 94mm F7 Brandon 14.5 inch f4.2 Starmaster Dob(Zambuto mirror) TeleView Genisis SDF with 1000 Oaks Glass filter Zeiss 63mm f13.5 refractor 1000 Oaks Glass filter Itty Bitty Solar Radio Telescope. LHRIES Lite Solar Spectrometer Post Extras:       Mozhoven scholastic sledgehammer Reged: 05/26/05 Posts: 884 Loc: Middletown, CT Re: 17mm Hyperion won't come to focus in my PST... [Re: Ralph Marantino]       #3318978 - 09/06/09 06:15 PM Edit   Reply   Quote Quick Reply   Ok, correction. It does come to focus after all. I had forgotten that I put in a 28mm extension (Tuning ring) before I tried it the first time. Guess the sun was frying my brain. So, the 17mm as-is works, but does not with a tuning ring. So, we'll see if it works with the Denks. (with the tuning rings, that is...) -------------------- Jeremy Davis Sculptor & Certified Binoviewer Addict (CBA) Orion XT12i - 12" f/4.9 "Alfred E. Newtonian" Wyorock Custom Crayford Denk Standards w/Dual PxS PST (w/the "Good" Gold Objective) 12x60 Oberwerk Binos www.jdavisgallery.com Post Extras:       Mozhoven scholastic sledgehammer Reged: 05/26/05 Posts: 884 Loc: Middletown, CT Re: 17mm Hyperion won't come to focus in my PST... [Re: Mozhoven]       #3318984 - 09/06/09 06:16 PM Edit   Reply   Quote Quick Reply   Steve, How do you find the eye placement with that 8mm Hyperion and the PST? It seemed very tricky to me with my 17mm, more so than any other EP I've ever used. A little left or right and you have complete blackout. -------------------- Jeremy Davis Sculptor & Certified Binoviewer Addict (CBA) Orion XT12i - 12" f/4.9 "Alfred E. Newtonian" Wyorock Custom Crayford Denk Standards w/Dual PxS PST (w/the "Good" Gold Objective) 12x60 Oberwerk Binos www.jdavisgallery.com Post Extras:       molniyabeer Confused and Asleep Reged: 01/08/05 Posts: 2559 Loc: Central Coast, California Re: 17mm Hyperion won't come to focus in my PST... [Re: Mozhoven]       #3323248 - 09/08/09 11:38 PM Edit   Reply   Quote Quick Reply   It is a little more unforgiving than some but when I am centered it does give me a really pleasing image. The other eyepiece I use is the 20mm (Kelner?) that came with the PST plus a 2x barlow. I've not tried the Cemax line but have not read enough to convince me to drop more cash there vs. elsewhere. -------------------- Steve 16" Meade LightBridge (Beowulf) 10" Hardin DSH, StarMax 127mm Mak, PST H-a Oberwerk 11 x 70 binocs, Tasco 10 x 50 binocs Santa Maria Clear Sky Clock Figueroa Mt Clear Sky Clock Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 5 registered and 3 anonymous users are browsing this forum. 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