2022 Michael A. Siniscalchi
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    Abell 61
       Planetary Nebula in Cygnus
       RA:19h 18m 56s  Dec: +46 10' 42" Distance - ~4500ly  Size - 3.3 arcmin

Click on image for larger size
  Abell 61 (PNG077-6+14-7) is a planetary nebula in Cygnus. The central variable 17th magnitude star WD1917+461 is the blue star in the center of the nebula.Surrouning most of the nebula is a faint rim that becomes darker near the bottom left side. Research done by Tweedy and Kwitter indicate the darker portions of the rim may be due to interactins with Interstellar Medium.

Location & Date
Backyard, Abbott Observatory- Long Island, NY,  July 2021
Telescope
TMB130SS F/7 APO, Moonlite focuser, Losmandy G11 Gemini
Image scale 1.54 arcsec/pixel
Camera
SBIG ST-10XME
Baader  Ha OIII L R G B  filters
CCD temp -10C
Exposures
Ha 18x10m  OIII 18x10m  Lum 40x3m  Red-12x5m Green -12x5m Blue-12x5m   Bin 1x1
Planning & Acquisition
Image planning - Sequence Generator Pro
Image acquisition - Sequence Generator Pro w/PinPoint & PHD2 (guiding)
Processing
CCDStack - calibration, debloom, normalize, alignment, deconvolution, RGB combine
Adobe Photoshop -   L+RGB & Ha+OIII Color processing, Noise reduction, JPEG conversion

Three hours exposure in Hydrogen Alpha (Ha)

Three hours exposure in oxygen (OIII)
  Two hours exposure in luminance