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Posts Tagged ‘California nebula’

Ced 214 (Sh2-171) and NGC 7822

September 23, 2012 Leave a comment

Cygnus is not the only summer narrowband delight in the northern hemisphere.  Cepheus also hosts some beautiful emission nebulae, two of which are shown here. The object on the left has the lovely name Cederblad 214, also known as Sharpless 171.  The object on the right (that I can’t help but see as a seahorse) is NGC 7822.

Ced 214 is fairly commonly imaged at longer focal lengths to capture its “elephant trunk” pillars of expanding gas, but here I’ve captured a little bit wider of a field at about 430 mm (on the KAF-8300 chip).  If you go even wider, the whole region is covered in nebulosity that when framed properly is known as the Cosmic Question Mark.

This image took five evenings in September to capture.  This object has a low surface brightness, especially in O-III.  This image represents just shy of 20 hours of total exposure time.

Ced 214 (Sh2-171) and NGC 7822

Ced 214 (Sh2-171) and NGC 7822

 

Image data:

Exposures:  16 x 1200s Ha , 16 x 1200s O-III, 27 x 1200s S-II (19h 40m total)

Software:  guiding by PHD, stacking in DeepSkyStacker

Processing:  Photoshop CS3, modified Hubble palette

Telescope:  Televue NP101 with 0.8x reducer (at about  f/4.3)

Camera:  SBIG ST-8300M with Baader standard narrowband filters, 2×2 binned

Mount:  CGEM

September 9, 10, 11, 12, and 19, 2012

NGC 1499, The California Nebula, in Narrowband

February 25, 2012 Leave a comment

This Borg 77EDII is just too much fun with the large narrowband objects.  Combining the f/4.3 focal ratio with 2×2 binning on the ST-8300, I can get a ton of data in a short time.  This image was taken over a single night (2/9).

NGC 1499 is also known as the California Nebula.  I’ve chosen to orient the image differently, but you can see the California shape if you turn your head to the side.  It’s a huge object at over 2 degrees across.  That’s more than the width of four full moons.

NGC 1499, The California Nebula

Image data:

Exposures:  15 x 600s Ha, 10 x 600s O-III, 10 x 600s S-II, a total of 5h 50m

Software:  guiding by PHD, stacking in DeepSkyStacker, processing in Photoshop CS3

Telescope:  Borg 77EDII w/ f/4.3 reducer

Camera:  SBIG ST-8300M with Baader narrowband filters

Mount:  CGEM

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