Scopes: 190mm SW Mak-Newt @ f/5.3 & 90mm SV Raptor Triplet @ f/7Cameras: Atik 383L+ mono w/ EFW2 FW with Astrodon filters & Canon XSi 450D (Modded)Mount: Astro-Physics Mach1GTO mount guided with QHY5 KWIQ guiderSoftware: Sequence Generator Pro; PixInsight; Photoshop CS5Best investment: Stone Garden Observatory - Bortle 4 (Green)
Scott my scopes: a few refractors (50-102mm), 2 Newts (4.5-12"), and an 8" SCT
12" Dob, 4" Mak, 3" APO, PST, bunch of green eyepieces & an understanding wife.
Quote:Great setup you have there! Just had first light last might with mine as well!!! Lovely scope!
NexStar 8SE; Stellarvue SVR90T; Celestron 102GT; Orion ST80 Orion 9x63, Oberwerk 15x70 binos And there they still stood, obscurely commemorating man's triumph over time and matter and the triumph of time and matter over man. -- Aldous Huxley, on the Mayan stelae at the Quirigua ruins
SLAP Observer --- TMB130SS, SV102V(LOMO Lens), SV80ED Deluxe "The only thing necessary for the triumph of evil is for good men to do nothing." -- Edmund Burke. "People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." -- George Orwell "The measure of a man’s greatness is not determined by what he accomplishes for himself, but by what he accomplishes for others.” -- Some Bald Guy
“I am the only person to ever ace a 1951 USAF resolution test. My 'to observe' list says 'done'. I do not use charts or atlases when I starhop; men do not use maps. One of my sketches won an SBIG deep sky imaging contest. I am the life of star parties I have never attended. I never say anything looks like a faint fuzzy - not even a faint fuzzy. Pilots aim green laser pointers at me. Don Pensack proofreads my CN forum posts.” - The Most Interesting Astronomer in the Universe
Celestron Nexstar 8SE with 6.3 focal reducer SV 90mm SVT Raptor APO Triplet Refractor Celestron AS-GT (Hypertuned) Orion SSAG/Mini-guider Canon T3i DSLR modded with Baader UV/IR filter Backyard EOS/Deep Sky Stacker/Photoshop CS5
Quote:I have a favor to ask you, and have no problem if you don't want to or can't do it, but here goes...If you have a green laser pointer I would like for you to shine it through the optical group and let us know if you can see the beam passing through all three elements.Thanks a bunch if you can do it. No problem if you can't. I ask because green laser light passing through true CaF2 crystal does NOT scatter meaning that you can't see a green laser beam in true fluorite matrix. Low dispersion glasses do often use some CaF2 in the mix, but unlike CaF2, which is a homogeneous, uniform crystal, ED glass (even that matching closely the dispersion properties of fluorite crystal) always produces some internal scatter and will show the transit of a green laser beam. It will in no way damage the optics.Regards,Jim
Quote:What's the point, is it to be supposed CaF2 ????
CPC 1100 Fastar / FeatherTouch / Moonlite CS / StarSeek StellarVue SVR-90T Raptor / NexstarSE / Sky-Fi / Vixen Porta II Lunt LS80T/B1800 / Moonlite CF Canon 12X36 IS II Ethos 13mm, 17mm / Nagler 31mm / PanO 41mm ES100 9mm, 20mm / ES82 4.7mm, 24mm 2X Powermate MaxBright Bino Hyperion 8mm x2, 13mm x2, 17mm x2, 21mm x2 Baader Ceramic Wedge
Quote:So what does this mean?
Binoculars: Miyauchi Saturn III - 33/39/50/71/150x100, WO 22x70ED, Fujinon 16x70 FMT-SX Pentax 10x50 PCF-V, 10x43 DCF-SP, 6.5x21 Papilio
Nikon 10x35 EII, 7x35 E, 8x30 EII, 8x23CF AS Diplomat
B&L 7x26 Custom
Scopes: C9.25, TMB130SS/FT, SV80S-LOMO 80/480
Quote:Keith,I have not experimented with the spacing of the TRF-2008. I use a standard profile EOS T-ring. I am interested in learning more from your experience!Best,George
Quote:George, I'm supposed to get a few hours clear tonight and so I'm going to do some more rigorous testing with the spacing to confirm which gives the best results. I need an area with more stars than my first set so that I can run them through CCDInspector with more confidence, and I need to make sure that the focus is the same at all three spacings -- I plan to use a Bhatinov mask. I'll post some results soon. ...Keith