Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  NGC 4485  ·  NGC 4490
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NGC 4490, a LRGB picture, 



    
        

            Niels V. Christensen
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NGC 4490, a LRGB picture

Imaging telescopes or lenses: Meade Lx200ACF 16" F6.2 Meade SCT 16"

Imaging cameras: Canon 20Da Canon  ·  SBIG ST-8XME SBIG ST8

Mounts: Milburn Wedge Wedge mounted on a pole

Guiding telescopes or lenses: WO FLT-110 WO

Guiding cameras: SBIG ST-8XME SBIG ST8

Focal reducers: Optec lepus 0.62 Optec reducer

Software: The Sky, CCDSoft, Atik, CCDStack2, PS Diff. products

Filters: IDAS LPS P2 IDAS  ·  Astronomik Narrowband/LRGB filter set

Accessory: Meade on wedge


Dates:April 8, 2011

Frames:
48x300" (4h)
16x600" (2h 40')

Integration: 6h 40'

Avg. Moon age: 4.46 days

Avg. Moon phase: 20.91%


RA center: 12h30m35s.517

DEC center: +41°3948.86

Pixel scale: 0.989 arcsec/pixel

Orientation: -3.291 degrees

Field radius: 0.152 degrees

WCS transformation: thin plate spline

More info:Open 


Resolution: 595x935

Locations: Home observatory, Copenhagen, DK-2270 Kastrup, Denmark

Data source: Backyard

Description

A LRGB picture of the NGC 4490 galaxy.

The below text taken from here:

https://www.cloudynights.com/topic/318388-april-2011-challenge-entries-ngc-4490/#entry4078202

The picture was taken during two nights, 08 april 2011 and 10 april 2011 in Copenhagen Denmark.

Telescope: Meade LX200ACF 16". Mount: Ken Milburn wedge, Camera: SBIG ST-8XME, Reducer: Lepus 0.62X

Guiding: Via Individual ED70/SBIG STL 237H CCD using CCDSoft.

Exposure: RGB each channel 12*5min and LUM 12*5min+16*10min.

Filters: 2" IDAS LPS and 1.25" LRGB astronomik.

Preprocessed, and stacked in CCDStack2 using dark, flat, dark-flat and bias frames.

Further processed in Adobe PhotoShop CS4.

My home build observatory is placed in my front yard/in the "red light" polution zone, have a look here,

Red Zone

Kind regards Niels

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NGC 4490, a LRGB picture, 



    
        

            Niels V. Christensen