M27 Dumbell Nebula + HD 189733b Exoplanet
M27 Dumbell Nebula + HD 189733b Exoplanet
July 14th, I was able to capture the exoplanet transit HD 189733b as it passed in front of star HD 189733 and process the light curve showing a good transit light curve. I decided to spent a couple more nights capturing M27 the Dumbell Nebula in RGBHSO filters to make an image out of the area.
HD 189733 is a K-type star about 64 light-years away. HD 189733 b is a gas giant exoplanet about 1.13 times the size of jupiter and is said to have an atmosphere loaded with 5000+ mph winds and shards of glass. The orbit of this exolanet is really close, spinning around its sun in just 2.2 days and the transit method used to observe is well known. Hubble has studied this exoplanet in detail, and it’s a very unfriendly environment.
Equipment
Telescope: Celestron RASA 11 (620mm focal @ f/2.2)
Filters: Baader Ultra-Highspeed F/2 3.5nm & 4nm Filters.
Main Camera: ZWO ASI 1600mm-pro Monochrome
Tilt & BackFocus Adjuster: ASG Photon Cage
Mount: Skywatcher EQ6r-Pro
Guide Scope: William Optics 50mm Uniguide
Guide Camera: ZWO ASI 290mm-mini
Location
Location: Pendleton, Oregon
Observatory: NexDome 2.4m Automated
Bortle: 3
Long & Lat: 45.67N, -118.79 W
Shoot Parameters
Date: Exoplanet observation 7/14/2022, RGBHSO imaging over following week.
Exoplanet capture: Ha filter using 29 second exposures and 75 gain.
Ha: 67 x 180 seconds
Oiii: 54 x 240 seconds
Sii: 33 x 180 seconds
R: 41 x 10 seconds
G: 61 x 10 seconds
B: 47 x 10 seconds
Calibration Bias: 20
Calibration Dark: 20
Calibration Flats: 30 for each filter
Gain: 139
Cooling: -10
Processing Software: Stacked in Astro Pixel Processor, captured using NINA, PixInsight, PhotoShop, StarXTerminator, NoiseXTerminator, HOPs & Exotic for Photometry.
