2021 Michael A. Siniscalchi

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Odds n Ends

    Messier 27
       Planetary Nebula in Vulpecula
       RA:19h 59m 44s  Dec: +22 38' 13" Distance - 1227 ly  Size - ~1.96 ly x 1.96 ly

Click on image for larger size

Messier 27 is also known as The Dumbbell Nebula which comes from the English astronomer John Herschel, who observed the nebula in 1828 and compared its shape to that of a dumbbell. It is the second brightest planetary nebula in the sky second only to the Helix Nebula in Aquarius. The Dumbbell Nebula is formed by a central star seen in this image that illuminates its expanding shell of gas that is expelled by the star after it had used up all of its nuclear fuel. The central white dwarf in M27 is re the core left from the original star and it is exceptionally hot.

Location & Date
Backyard, Abbott Observatory- Long Island, NY,  June/July 2022
TMB130SS F/7 APO, Moonlite focuser, Losmandy G11 Gemini
Image scale 1.54 arcsec/pixel
Baader  Ha SII OIII  filters
CCD temp -15C
Ha-12x10m   SII-14x10m  OIII-12x10m   Bin 1x1
Planning & Acquisition
Image planning - Sequence Generator Pro
Image acquisition - Sequence Generator Pro w/PinPoint & PHD2 (guiding)
CCDStack -  Calibration, debloom, align, stacking, deconvolution
Adobe Photoshop -   Ha OIII SII combine, Noise reduction, JPEG conversion
Topaz Gigapixel AI - finer detail processing
RC Astro StarXTerminator
120 minute exposure of Hydrogen Alpha (Ha)
120 minute exposure of Oxygen (OIII)
140 minute exposure of Sulfur (SII)
This narrow band image was processed using the HST color palette
Mapped color - Red=SII Green=Ha Blue=OIII
Below are the individual frames after initial stretching

Messier 27 position shown relative to our location (Sun) in the Milky Way Galaxy
Galatic Longitude: 60.8
Galatic Latitude: -3.7
Distance from Galatic Plane:23 ly below the galatic plane

Above image and info provided by Our Galaxy 3D Atlas application and used with permission by Otherwise