Captured from GrandMesaObservatory.com in Western Colorado earlier this year Sh2-274 otherwise known as The Medusa Nebula using the Sky-Watcher Esprit 150mm ED F7.0 Triplet APO Refractor that Sky-Watcher USA have sent to us for testing.
GMO acquired the data in Color using LRGB Filters with H-Alpha mapped to the red channel and OIII mapped to the blue channel
The data is from “System 2” (now using QHY163M mon CMOS) and available through Grand Mesa Observatory’s Subscription services which you can read more about here:
grandmesaobservatory.com/equipmentTotal Integration time 17.75 hours
Image details
Terry Hancock downunderobservatory.com
Location: GrandMesaObservatory.com Purdy Mesa, Colorado
LRGB, OIII, SII
Dates of capture: Jan 26, Feb 1st, 2nd, 7th, 9th, 2019
LRGB 600 min, 15 x 600 sec, bin 1x1
H-Alpha 270 min, 18 x 900 sec, bin 1x1
OIII 195 min, 13 x 900 sec, bin 1x1
Camera: QHY168M beta mono
Calibrated with flat, Dark & Bias
Optics: Sky-Watcher Esprit 150mm ED Triplet APO Refractor
Filters by Optolong
Image Acquisition software Maxim DL6
Pre Processed in Pixinsight
Post Processed in Photoshop
Star Spikes Pro
My previous imagery of The Medusa Nebula (collaboration with Fred Hermann)
www.flickr.com/photos/terryhancock/8631514505/in/photostr...www.flickr.com/photos/terryhancock/8631514757/in/photostr...The Medusa Planetary Nebulais in the constellation Gemini and is about 1500 light years distant. It’s very old, very large and very dim (magnitude 16). The Medusa is roughly 12,000,000 times dimmer than the brightest star of the evening sky (Sirius at magnitude -1.4).
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