You do not need a parachute to skydive, you only need a parachute to skydive twice...
Bored? Peruse my website: http://www.samirkharusi.net/
Dark Arts Observatory - Brockport, NY - Skyshed POD XL5 with iOptron iEQ45 Mount
Scopes: C8, C5, SV110 ED, EON-72 ED, ST 80, ATRC6, Megrez 90
“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
Eager to get the Cave 6" f/4 out with some 'high' (medium in this scope) power eyepieces!
Quote:A very good article! By the way, that question of a premium 5" APO outperforming an average 8" SCT is unlikely to fade away as long as a 5" premium APO costs 3 to 7x an 8" SCT...Here are examples of actual planetary images taken at the same rooftop (so very likely similar seeing conditions but unfortunately different years), same person (so same level of ability in post processing), same webcam (ToUcam Pro): Left to right: TV140 (5.5" premium APO), C8 and C14
Quote:He is saying that most people will never have the chance to easily compare the throughput of a 5" apo to a C14 but if they did have the chance, it would be clear that the latter outperforms by a lot.
Quote:How can a 6" Newt with a 20% CO have LESS effective throughput and less effective aperture than the 6" SCT that has a 36% CO. This does not make sense to me. I would it to be the opposite.Same with the 8"new vs the 8" LX200.
LX850 blog: www.LX-850.com
personal website: www.wadsworthobservatory.com
Celebrating the 30th anniversary of the USFL, when football was more than a game.
That's me in the avatar running back a pass I intercepted for a touchdown
Skywatcher 120ED Refractor Assorted Zhumell Planetary, Skywatcher and ES eyepieces, a 2x barlow and a few filters. iOptron MiniTower II Sony NEX 3 for astrophotography
10" OO VX, 6" iOptron Mak-Cass, Orion 100ED
Quote:There' one way and one way only to test a telescope and thats eye up to the eyepiece.All of these charts and graphs and maths leave me cold.Astronomy books are the biggest culprits in this regard.