My gear: --Celestron 8EdgeHD & 11EdgeHD | 80mm F/6 Triplet | Modified Canon T1i | QSI683WSG-8 | Celestron AVX mount | iOptron CEM60 mount | iOptron ZEQ25 mount --- My skies:
Astronomy educator/Sidewalk astronomer
Owner of Astronomy Delight franchise
18 inch f4.42 Dob on eq platform w ST120 f/5 finder
12 inch Zhumell Dob
8 inch f/6.9 home made Dob with Seevers optics
William Optics red 10th Anniversary 80mm FD
C8 XLT on Vixen GPDX
26lb eyepiece box
Cernan Space Center astronomer
Member of Northwest Suburban Astronomers
http://www.faintfuzzy.net Stuff C14, C8, Orion XX14i, Meade 8" ACF, AT6RC, AT102ED, Orion ED80, PST, AP1600GTO, CGE, CG5, ST10-XME/CFW8, QHY8PRO, Optec TCF-s, Microtouch Focuser, Pyxis LE, Hyperstar for C8.
Quote:I would get the 10" APO and sell it. Then I would invest the money on a remote observatory and all the equipment needed for that.
"Coffee leads men to trifle away their time, scald their chops, and spend their money, all for a little base, black, thick, nasty, bitter, stinking nauseous puddle water." ~The Women's Petition Against Coffee, 1674If it ain't broke, fix it 'til it is.
Orion xx14g Dob CPC 1100 w/Skywatcher 80ED piggybacked Coronado PST TMB 92L refractor AT Voyager mount Nexstar 6/8 mount Denk Big Easy binoviewers Oodles of eyepieces and other optical gadgets Past scopes Meade 8" reflector and 8" SCT
Quote:Hypothetically: you are an observer of deepsky galaxies and such as much as mars and the moon. Even more amazingly you are given a choice (oh hell it s free) of a ten inch apo or c14 - which would you pick?Because the planetary is at least good in a c14 and its got the extra aperture for galaxies, I'd opt for a 14.Am I wrong or can the apo wver match the 14 on galaxies. Contrast only goes so far.Pete
- Jared Willson
C11 Edge HD, C925 XLT TEC 140 (#352) w/ AT65EDQ Skywatcher 100ED w/ WO66SD ZenithStar, ES 80mm Apo Sirius, Atlas EQ-G, "Atlosmandy" Pro AZ/EQ-G, T-Rex Apex,Porta II DBK21AU04, DBK21AU618, DMK21AU618, DMK31AU03, ASI120mm/mc, Hutech 500DH Beaglehaven Observatory (BYO #168)
Meade LX200GPS 14", Meade LX200ACF 10" Celestron C8 SCT w/Hyperstar (CGEM Mounted) Explore Scientific AR152, 127mm APO, 102mm APO, 80mm APO AT 6" RC, William Optics GTF 102 Lunt LS60TDS & Cak B1200 QHY10, ATIK 460EX(M), 450C, Starlight Express H18 w/FW and OAG Orion StarShoot Pro V.2, Orion StarShoot SS III, NexImage 5 & PG Chameleon Meade LPI, DSI-C 1, Lodestar & SSAG (autoguiders) Canon XSi Digital Rebel Hap Modded Images Plus 4.0, MaxIM DL Pro 5.14, BackyardEOS
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
Quote:10" apo all the way!
Money can't buy happiness, but it sure makes living with misery a lot easier!
David Cotterell Toronto, Ontario "If an observer actually sees an object, there is no point in referring to a formula to find out whether he ought to see it; and if he fails to detect it, no formula will ensure his success." - W.H. Steavenson 8" f/15.5 TEC Maksutov 16" f/5 Teeter/Zambuto Dob 66mm WO SD AT 65EDQ APO Refractor Astro-Physics Mach 1 GTO Mount iOptron ZEQ25 mount Canon 60Da
APM/TMB 115/805 APO Celestron ED-80 Celestron 9.25
CG-5 Vixen Porta II
Naglers: 17T4, 13T6, 3-6 zoom UWANs: 28mm, 7mm Pentax 10XW, 10mm Radian
Misc EP: 50mm Parks, 42mm GSO, 2x TV Barlow, sundry plossls...
Clear skies, Erik
Visual astronomer, main instruments:
Matthias Wirth 16" f/5 Takahashi FS-102 NSV on EM-10 Celestron 1983 C5
Zeiss, TeleVue and Celestron eyepieces
Nikon 18x70 IF-WP Zeiss Victory FL 7x42 Zeiss Victory FL 10x32
Mark EON 80 - Twilight 2 | C11 - iEQ45 | Astro Physics 175EDF - 900GTO
“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
Quote:Hypothetically: you are an observer of deepsky galaxies and such as much as mars and the moon. Even more amazingly you are given a choice (oh hell it s free) of a ten inch apo or c14 - which would you pick?
Quote:I know this is the Cat forum but it is surprising to me as well as noted before, many would opt for the 30% obstructed commercial mirror over a handmade work of art with no obstruction, no diffraction, perfect images. Of course the mounting issue is not at all practiclal in fact almost... insur-mountable.
Quote:First, you're comparing an off-the-shelf SC to a hand built refractor. This is a common comparison, one I could never understand.Now, let's get Mike Lockwood to make us a hand figured primary and secondary mirror to the very best of his ability...maybe Mike's best mirrors ever! And we'll also get Mike to figure the corrector as closely matched to these mirrors as his prolific skills will allow. Now, let's make sure that the OTA has active cooling. And let's make sure that the tolerances of the mirror riding on the baffle tube is incredibly tight, to the point that the lube is specially formulated so that it can be very slippery but the amount of lube is only a few microns. And the focusing mechanism is extremely rigid to limit image shift to virtually nothing.Ok...now we would have a fair comparison in optics, mechanics and price. David
Quote:First, you're comparing an off-the-shelf SC to a hand built refractor. This is a common comparison, one I could never understand.
Quote:I'd take a 7" apo over a C14, does that count? Never been a fan of those short, stubby looking things aside from small Maks. Although, to be fair I've never seen the views through an Edge HD.
Quote: A couple of weeks ago, Roland Christen posted an interesting discussion on the largest practical size for APO refractors using current design technology. In particular, he said that for a 10" APO triplet, it was impossible to get visual colors to come to the same focus, while also correcting for spherical aberration. This discussion was in the context of why a 10" Mak-Cass was putting up better views side-by-side than a 10" APO at a particular star party.
Quote:I remember that Astronomic selling 254mm (10") F9 OTA for $39,999....just tube!!!!! If I can afford it and I wouldnt buy it. Meade 16" SCT!
Quote:Can you, please, give a direct link to this discussion where Roland said such things?Thanks.Valery.
Quote:If I bought a 10" APO, I would need to take out a loan for my divorce attorney. My APO and I would most likely have to get an apartment somewhere - but at least we'd be together.
Quote:Quote:If I bought a 10" APO, I would need to take out a loan for my divorce attorney. My APO and I would most likely have to get an apartment somewhere - but at least we'd be together. FYI there are A LOT more women than 10" APOs out there...just sayin'...