Contains:  Gear
Main Prime-focus set-up, 



    
        

            AlenK

Main Prime-focus set-up

Description

This is my current main set-up for prime-focus imaging, primarily of DSOs. It consists of a Meade LXD55 SN6 6-inch f/5 Schmidt-Newtonian OTA on a Vixen GP-DX equatorial mount with SkySensor 2000PC Goto supported by a Universal Astronomics surveyor's tripod (much steadier than the GP-DX's stock aluminum tripod). The guidescope is a ubiquitous Chinese short tube 80mm f/5 achromat. I actually don't guide lately, because the mount's PPEC allows unguided exposures of several minutes, provided good PA has been achieved. That simplifies things enormously. I don't even bring a laptop anymore.

Many people are dismissive of Schmidt-Newtonians for AP and also of standard Newtonians with coma reducers. But this OTA gathers a lot of light, is reasonably fast, holds collimation very well, is physically very light (13 lbs) and hence stable on the GP-DX and produces decently well-corrected APS-C images. For around $200US today (used, of course), it is the best bang for the buck out there, IMO.

PS. Yes, I should have removed the scope's front dust cover before taking the photo!

PPS. The bicycle-seat-style chair is a holdover from my original astrophoto setup, which I used in the early 2000's.

Comments

Histogram

Main Prime-focus set-up, 



    
        

            AlenK