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Michael A. Stecker
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M16 "Eagle or Star Queen
Nebula"
M16 is an emission nebula in the constellation Serpens. At the center is a dark silhouette made famous as the "Pillars of Creation" imaged by the Hubble Space Telescope. file: M16-240sX19p3-6202023am-2b-bs1.jpg Photographic Data telescope: Celestron 9.25-inch EdgeHD SCT at f/7 (focal length= 1,637 mm)
mount:
ZWO AM5 harmonic/strainwave Mount Guide Settings in Asiair Plus: Calibrate Step: 5,000 ms Dec Duration: 3,000 ms RA Duration: 2,000 ms Aggression: 50% for both RA & Dec Exposure time for guiding: 1 second
Guiding hardware:
SVBony 60 mm f/4 guidescope (fl=240 mm) Guide Camera: ZWO ASI662MC color planetary camera (2.97 micron pixels) controller/computer ZWO Asiair Plus via WiFi to Samsung S7+ tablet . imaging camera: ZWO ASI533MC-Pro one-shot color astro-camera cooled to 14-degrees F with Optolong L-eNhanced nebular filter . exposures: 240 seconds X 29 (116-minutes)
processing
Stacked in Asiair Plus and cropped and post-processed in Adobe Photoshop Elements . photographic site: West Los Angeles http://mstecker.com/pages/chhouses_fp.htm (Bortle 9 light polluted sky) |
