NGC 2403 (Caldwell 7)

Telescope: Planewave 17" CDK reflector, 1940 mm FL
Camera: FLI-PL6303E, 3072 x 2048 pixels
Exposure: Lum: 10 x 3 minutes, imaged to 21st mag. Processed with PixInsight and Photoshop.
Location: Mayhill, New Mexico (Elevation 7380')
Image Center (J2000): RA 7h 36m 49s, Dec 65° 35' 57"
Image Size: 27' x 24'

Intermediate Spiral Galaxy in Camelopardalis, mag 8.9, apparent size 21' x 12', part of the M81 galaxy group. The northern spiral arm contains star forming region NGC 2404. Visually similar to M33. Bright stars within the galaxy's disk lie in the foreground and are unrelated. Many HII regions and some Globular cluster candidates are visible in this image. Brightest Cepheid variable in NGC 2403, TS V10, at mag 22.8 is too faint for this image.
Raw data for this image can be downloaded.


NGC 2403 (Caldwell 7), Intermediate Spiral Galaxy in Camelopardalis, mag 8.9, apparent size 21' x 12', part of the M81 galaxy group. The northern spiral arm contains star forming region NGC 2404. Visually similar to M33. Bright stars within the galaxy's disk lie in the foreground and are unrelated. Many HII regions and some Globular cluster candidates are visible in this image. Brightest Cepheid variable in NGC 2403, TS V10, at mag 22.8 is too faint for this image.
, acquired with a remote telescope at Mayhill, New Mexico (Elevation 7380')

Object Label Identifier Notes
Star Cluster Clusters of Stars. Marked 4 are marked.
Globular Cluster GL1 [D2007] J073617.3+652900.5 Possible Globular Cluster
Globular Cluster GL2 [D2007] J073727.0+652820.5 Possible Globular Cluster
HII Region NGC 2404 NGC 2404 HII region in NGC 2403 with separate NGC number
HII Region HII Regions. Marked 24 are marked.

Click on the image to display the plate solved image with annotations. 5' across NGC 2403 is about 11,500 light years.


FITS files to create this image:

Luminance:

NGC 2403 Luminance

Image shown is Luminance 001.fits. Each file is 180 seconds, Planewave 17" reflector, 3072x2048 pixels, unbinned with Darks, Bias and Flats applied. Data acquired Feb 2 and Feb 3, 2016.


Luminance 001.fits
Luminance 002.fits
Luminance 003.fits
Luminance 004.fits
Luminance 005.fits
Luminance 006.fits
Luminance 007.fits
Luminance 008.fits
Luminance 009.fits
Luminance 010.fits


Files can be loaded into PixInsight directly from the PixInsight console. For example, in the PixInsight console enter:
    open "http://www.remote-astrophotography.com/NGC2403/NGC 2403-Luminance-BIN1-010.fits"