Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  Sh2-155
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3 nights in a cave - 1170 60 secs unguided subs on the Cave nebula, 



    
        

            Stefano Ciapetti
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3 nights in a cave - 1170 60 secs unguided subs on the Cave nebula

Getting plate-solving status, please wait...
3 nights in a cave - 1170 60 secs unguided subs on the Cave nebula, 



    
        

            Stefano Ciapetti
Powered byPixInsight

3 nights in a cave - 1170 60 secs unguided subs on the Cave nebula

Imaging telescopes or lenses: Orion USA 10" Astrograph F/3,9

Imaging cameras: QHYCCD 183m

Mounts: Ioptron Cem60

Software: Astroart

Filters: Baader Planetarium H-alpha 50nm narrowband filter

Accessory: Baader MPCC Mark III


Dates:Aug. 14, 2020Aug. 15, 2020Aug. 16, 2020

Frames:Baader Planetarium H-alpha 50nm narrowband filter: 1170x60" (19h 30') (gain: 16.00) -20C bin 2x2

Integration: 19h 30'

Darks: 360

Avg. Moon age: 25.73 days

Avg. Moon phase: 15.97%

Bortle Dark-Sky Scale: 7.00


Astrometry.net job: 4741292

RA center: 22h 57' 16"

DEC center: +62° 30' 14"

Pixel scale: 0.984 arcsec/pixel

Orientation: 150.125 degrees

Field radius: 0.423 degrees


Resolution: 2657x1593

Locations: Prato - S.Lucia Home Terrace Observatory, Prato, Prato, Italy

Data source: Backyard

Description

This image is the sum of 1170 60 secs unguided subs taken during the nights of the 14th, 15th and 16th of August from my home terrace. Imaging train was as follow:

Newton Orion 250 F 3.9 + QHY183M cooled + Ioptron CEM60 + Baader Coma Reducer + Baader 35 nm HA filter

On top of that there was an Acuter ED90 + modded Canon d600 taking color frames that will be processed soon.

Image is almost unprocessed - just stacked, cropped, stretched with Astroart. With Astroart I have also applied the Gradient Removal and Star Reduction routines.

Sh2-155 (also designated Sharpless 155 or S155) is a diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. It is widely known as the Cave Nebula, though that name was applied earlier to Ced 201, a different nebula in Cepheus. Sh2-155 is an ionized H II region with ongoing star formation activity, at an estimated distance of 725 parsecs (2400 light-years) from Earth (Wikipedia)

Thanks for looking

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  • 3 nights in a cave - 1170 60 secs unguided subs on the Cave nebula, 



    
        

            Stefano Ciapetti
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    3 nights in a cave - 1170 60 secs unguided subs on the Cave nebula, 



    
        

            Stefano Ciapetti
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Description: contrast adjustment with curves and noise reduction

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3 nights in a cave - 1170 60 secs unguided subs on the Cave nebula, 



    
        

            Stefano Ciapetti