NGC 4395
Published 3 April 22
Full image field here: Un-cropped full resolution
About this object
NGC 4395 is a low surface brightness Seyfrert type galaxy located in the Constellation Canes Venatici. It lies some 14 million light years distant. NGC 4395 also contains a low mass super massive black hole. Several spiral arms can easily be seen with many blue star forming regions. Also, a large area of red HII emission outlining emission nebula are also visible. Some good info about NGC 4395 can be found here: NGC4395. There are also many faint background galaxies in the image. Many cataloged any many not. The image above is just a small crop of the full field of view. Clicking on the image will bring up a full resolution crop and the link below the image will bring up a full field of view view where you can pan around and see all the background galaxies within the field. This annotated image labels many of the background galaxies.
This image was a test image, taken with very short 60s exposures to test the idea that with a very low noise camera, very short exposures can still overwhelm the very low read noise and provide a very deep image as long as enough of them are taken. The image is comprised of 882 separate sub exposures taken from a fairly dark Bortle 3 site.
NGC 4395 is a low surface brightness Seyfrert type galaxy located in the Constellation Canes Venatici. It lies some 14 million light years distant. NGC 4395 also contains a low mass super massive black hole. Several spiral arms can easily be seen with many blue star forming regions. Also, a large area of red HII emission outlining emission nebula are also visible. Some good info about NGC 4395 can be found here: NGC4395. There are also many faint background galaxies in the image. Many cataloged any many not. The image above is just a small crop of the full field of view. Clicking on the image will bring up a full resolution crop and the link below the image will bring up a full field of view view where you can pan around and see all the background galaxies within the field. This annotated image labels many of the background galaxies.
This image was a test image, taken with very short 60s exposures to test the idea that with a very low noise camera, very short exposures can still overwhelm the very low read noise and provide a very deep image as long as enough of them are taken. The image is comprised of 882 separate sub exposures taken from a fairly dark Bortle 3 site.
Image Details
- Optics : Stellarvue SVX 152T refractor @f8 1200mm FL
- Mount: Paramount MYT
- Camera: ZWO ASI6200
- Filters: Chroma 50mm LRGB, Astrodon 50mm 5nm Ha
- Exposure (min): LRGBHa 119:120:120:121:402 14.7, 2x2 binning 60s sub exposures
- Automation Control: The Sky X, Voyager, PrimaluceLab Eagle 4
- Guiding: Unguided
- Processing Software: PixInsight
- Location: Starry Night Ranch, Okeechobee, FL
- Sky: Typical SQM 21.5, Bortle 3
- Date: 2-5 March 2022
