M27 2013-08-14
Posted: Sat Aug 17, 2013 12:39 pm
Drug out my C6 for the first time in forever. Thought it was the right choice for a small-ish target, instead of the ED80T
Took 51 frames @ 300", tossed 14 for tracking errors. The little CG5 is huffin' and puffin' trying to lug that much weight around for 5 minute exposures.
Still not quiiiiiiiite happy with the reds in this one...I feel like they should be a bit "deeper" or "darker" than this...but it's pretty darn close.
Astrometry.net Calibration Information:
Acquisition Details :
Took 51 frames @ 300", tossed 14 for tracking errors. The little CG5 is huffin' and puffin' trying to lug that much weight around for 5 minute exposures.
Still not quiiiiiiiite happy with the reds in this one...I feel like they should be a bit "deeper" or "darker" than this...but it's pretty darn close.
Astrometry.net Calibration Information:
- Center (RA, Dec): (299.914, 22.718)
- Center (RA, hms): 19h 59m 39.429s
- Center (Dec, dms): +22° 43' 05.339"
- Size: 28.7 x 18.8 arcmin
- Radius: 0.285 deg
- Pixel scale: 1.01 arcsec/pixel
- Orientation: Up is -85.5 degrees E of N
Acquisition Details :
- Celestron C6 SCT
- Celestron f/6.3 Reducer
- DIY HyperTuned Celestron CG5
- PHD guiding via Orion SSAG and Orion 50mm Guidescope
- EOS 450D : IR Cut Filter removed
- BackyardEOS Session management
- 37 x 300" ISO 400 : 185 Minutes of integration
- 30 x Flats
- Calibrated With Masters : 50 x Bias, 30 x Darks
- Stacked in PixInsight
- Postprocessing in StarTools 1.3.5.246b
- Red Zone, 60-100% RH, 15-20 C ambient temps.
- Estimated Seeing 2-3