helix NB
Contains: Helix nebula, NGC 7293
Technical card
Imaging telescope or lens: Skywatcher 10 inch F4
Imaging camera: ZWO Optical ZWO ASI 1600MM cool
Mount: TAKAHASHI NJP Temma 2
Guiding telescope or lens: Skywatcher 10 inch F4
Guiding camera: QHYCCD QHY5L-II
Software: Main Sequence Software Seqence Generator Pro, Luc Coiffier's DeekSkyStacker, Adobe Lightroom Light room CC
Filters: ZWO S-II 7nm, ZWO H-alpha, zwo Oiii
Accessories: Nexdome Observatory, ZWO Optical Off Axis Guider, ZWO Optical Zwo Filter Wheel 7 x 36mm, QHYCCD Polemaster
Resolution: 2804x2929
Dates: Sept. 29, 2017, Oct. 2, 2017
Frames:
ZWO H-alpha: 105x120" (gain: 139.00) -15C bin 1x1
zwo Oiii: 30x300" (gain: 139.00) -15C bin 1x1
Integration: 6.0 hours
Avg. Moon age: 9.55 days
Avg. Moon phase: 71.31%
Astrometry.net job: 1756381
RA center: 337.431 degrees
DEC center: -20.826 degrees
Pixel scale: 0.779 arcsec/pixel
Orientation: 4.612 degrees
Field radius: 0.439 degrees