Hemisphere:  Northern  ·  Constellation: Virgo (Vir)  ·  Contains:  NGC 4435  ·  NGC 4438  ·  The Eyes
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Galaxies NGC4435 and NGC4438, a IRpassRGB image, CPH, Denmark, 



    
        

            Niels V. Christensen
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Galaxies NGC4435 and NGC4438, a IRpassRGB image, CPH, Denmark

Imaging Telescopes Or Lenses
Meade Lx200ACF 16" F6.2 Meade SCT 16"
Imaging Cameras
ZWO asi 294MM Pro cooled
Mounts
Milburn Wedge Wedge mounted on a pole
Filters
Astronomik IR 742nm · Baader LRGB, Hubble palette filters Baader filters
Accessories
Meade on wedge · Optec lepus 0.62 Optec reducer
Software
PixInsight PinInsight · PHD2 · The SkyX Pro, CCDStack2, RegiStar, PS. Diff. SW products
Guiding Telescopes Or Lenses
Individual ED70mm Individual
Guiding Cameras
SBIG ST-i SBIG

Acquisition details

Dates:
March 5, 2021 ·  March 10, 2021 ·  March 18, 2021
Frames:
Integration:
4h 51'
Avg. Moon age:
17.61 days
Avg. Moon phase:
29.15%
Bortle Dark-Sky Scale:
6.00

RA center: 12h27m42s.99

DEC center: +13°0145.7

Pixel scale: 1.017 arcsec/pixel

Orientation: -5.944 degrees

Field radius: 0.210 degrees

More info:Open 

Resolution: 853x1221

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

Data source: Backyard

Description

A IRpass-RGB color image & subs were taken during a couple of nights in March-2021.

Subs/frames was calibrated with darks & flats.

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

Red Zone

Kind regards Niels

Comments

Revisions

  • Galaxies NGC4435 and NGC4438, a IRpassRGB image, CPH, Denmark, 



    
        

            Niels V. Christensen
    Original
  • Galaxies NGC4435 and NGC4438, a IRpassRGB image, CPH, Denmark, 



    
        

            Niels V. Christensen
    C
  • Galaxies NGC4435 and NGC4438, a IRpassRGB image, CPH, Denmark, 



    
        

            Niels V. Christensen
    E
  • Final
    Galaxies NGC4435 and NGC4438, a IRpassRGB image, CPH, Denmark, 



    
        

            Niels V. Christensen
    F

C

Description: Tried the Adobe RGB (1998) color profile instead of the (default) sRGB IEC61966-2.1 color profile. Is this right thing to do, or?

Uploaded: ...

E

Description: Object seen in a wider FOV :-)

Uploaded: ...

F

Description: Added Ha/OIII subs to the RGB channels. NB exposures: 2x10x300sec :-)

Uploaded: ...

Sky plot

Sky plot

Histogram

Galaxies NGC4435 and NGC4438, a IRpassRGB image, CPH, Denmark, 



    
        

            Niels V. Christensen