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User / mtrosenthal
Mauri Rosenthal / 312 items

N 3 B 824 C 0 E Apr 21, 2014 F May 30, 2014
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From my backyard, less than 10 miles north of NYC, 4/20/14 11:35 pm EST.
Questar 3.5, ZWO ASI120MC cam, Televue 2X Barlow 1000 frames captured in 30 seconds with Firecapture 2.3;
Stacked and processed best 250 frames with Registax 6

N 5 B 932 C 2 E Feb 12, 2016 F Feb 12, 2016
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NGC 2903 is a barred spiral galaxy 20 million light years from earth, found in the constellation Leo. The broad outlines of the galaxy come through well with my small scope in my suburban setting, but the fine stellar detail found in dark site images does not.
Tech stuff: Questar 3.5" telescope and mount guided with SBIG ST-i guide camera using PHD2. Imaged February 7th, 2016 with Starlight Xpress Trius SX -694C camera behind a .5x Questar focal reducer. 29 X 6 minute exposures stacked and processed with PixInsight. Imaged from my yard 10 miles north of New York City.

Tags:   Astrometrydotnet:id=nova1433081 Astrometrydotnet:status=solved

N 5 B 1.0K C 5 E Sep 16, 2018 F Sep 24, 2018
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A processed image using the same data for 9/16/18 as this timelapse movie www.flickr.com/photos/124244349@N07/44737796122/in/photos... . Green Comet 21P/Giacobini-Zinner is moving towards orange Propus (Eta Gemini) and away from blue-white Messier 35, an open cluster. The PixInsight Comet Alignment utility assists in the assembly of two images -- one freezing the motion of the stars, the other freezing the faster movement of the comet. They are combined here into one image. The red Jellyfish Nebula can be found just to the East of Propus. From my yard 10 miles north of New York City.

Tech Details: Borg 55FL astrograph/IDAS LPS-D2filter/ZWOASI 1600MC astrocam/iOptronCubePro 8200mount unguided/18 X 3 minute SharpCap Livestacks of 4 second exposures, processed with PixInsight.

Tags:   Astrometrydotnet:id=nova2805255 Astrometrydotnet:status=solved

N 10 B 580 C 0 E Apr 24, 2022 F Apr 24, 2022
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Plenty of activity on the sun's face today.
Tech Stuff: 4 part mosaic Questar 3.5" image. From sun side of scope moving backwards: Baader D-ERF/Q 3.5"/DayStar Quark/0.5x Focal Reducer/QHY 5iii 174. Processed with AS3/ffmpg/PixInsight/ACDSee. As always solar viewing and imaging require specialized filters for personal and equipment safety.

Tags:   Sun Solar Sunspots H-alpha DayStar Quark Questar Hydrogen Alpha Chromosphere

N 14 B 1.0K C 0 E Aug 26, 2020 F Jan 3, 2021
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From summer 2020, as I got my H-alpha solar imaging technique down, this prominence made for a dramatic target.

Tech Stuff: Questar 3.5"/DayStar Quark/Baader D-ERF/TeleVue 2.5X Powermate/QHY 5III 174 mono Firecapure/AS3/ImPPG/GIMP/ACDSee/False color for maximum drama!

NB solar imaging requires appropriate filters to protect both eyes and equipment!


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