SCOPES: CPC1100; AT66ED; EdgeHD 8";SVR90T RAPTOR
MOUNTS: CGEM; Vixen GP2; iOptron Sky Tracker; Celestron AVX
CAMERAS: Canon 60D;Lodestar
EYEPIECES:TV N31T5;Delos14;Delos8;Pan27; PL20;PL25;PL32;TMB9
The Lord sits enthroned above the circle of the earth...He stretched out the heavens like a canopy.
Quote:For imaging would a 102mm f/7 refractor be easier to use?
Quote:For wide-field/faster imaging 102mm APO will be better
Quote:In what way would the 102 APO be better?
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)
Quote: The 6" collects about twice the photons so expect twice the total exposure time but you lose the spikes.
Quote: I prefer photons myself but that's a personal decision.
Quote: Do you get any coma or curvature?
Quote: For ease of use though, balancing, colimination, transport I'd give the edge to the APO probably also not by a small margin.
Quote:I found the Mak-Newt to be best for my imaging needs. It's equally a fast, has at least as flat a field, produced smaller star images and doesn't require focus offsets for my filters. Mak-Newts when properly collimated are incredible imaging scopes.
Quote:The only real drawback is its size and weight. If you can put up with handling the larger OTA I'd stick with the M-N.
Takahashi TSA-120 & Explore Scientific 102mm APO Refractors
Lunt 60mm PT Ha
Celestron Edge 800 & Edge 1100 SCT's
Celestron AVX & CGEM Mount's
Televue Ethos 100* 21mm, 17mm, 13mm, 10mm and 6mm & Explore Scientific 82* 4.7mm Canon Rebel T3i DSLR SBIG STF-8300M, FW5-8300, OAG-8300, ST-Ic guide & planetary camera
Quote:Of course the nice thing anout your MN6 is that it is paid for.
Quote:If we could just get some darned clear weather!
Quote:If I may ask what do you see as the problem with it other than the weight?
Quote:It's pretty much the weight and ergonomics of using a Newt on an EQ mount. It's not the best traveling scope out there either. When I took my trip to WSP, I couldn't find room in the car for it. I was interested in hearing other people's opinions on the scope. It's been so dreary all winter I haven't had a good chance to really put it through it's paces. Patrick
Quote:If I may ask how long is the cool down time? That was a big factor for me the last time I looked at it as I heard upwards of 45 minutes before start of imaging which is a real negative...
Quote:APO 102:pros- ready to use out of the box- easier for visual use- larger corrected field using proper field flatener (interesting for full frame sensors)cons- 2 times longer single exposures -> some objets require 2 or 3 night, especially with narrow band imaging, where the mak newt might do it in one night- lower resolution for casual planetary viwieng/imaging
Quote:Mak newtpros- well corrected for both visual use and imaging use- small obstruction-> these 2 assets together give a very good contrast in visual use, apo like view.cons- requires a precise colimation to get a good correction over the full sensor- focusing is more chalenging,-> require a really good focuser to achieve a proper alignment and focusing.- less friendly for visual use due to the focuser location
Quote: The ICX694 may be a very good fit for the mak newton, especially if you want to do some narrow band imaging.