Hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  IC 3303  ·  IC 3349  ·  IC 3355  ·  IC 3363  ·  IC 3382  ·  IC 3388  ·  IC 3393  ·  IC 3432  ·  IC 3442  ·  IC 3476  ·  IC 3478  ·  IC 3500  ·  IC 3501  ·  IC 3520  ·  IC 794  ·  M 84  ·  M 86  ·  M 88  ·  M 91  ·  NGC 4374  ·  NGC 4387  ·  NGC 4388  ·  NGC 4402  ·  NGC 4406  ·  NGC 4407  ·  NGC 4413  ·  NGC 4425  ·  NGC 4431  ·  NGC 4435  ·  NGC 4436  ·  And 16 more.
Getting plate-solving status, please wait...
Markarian’s Chain, M88, M91 and NGC4571, 



    
        

            Sinan Arkin
Powered byPixInsight

Markarian’s Chain, M88, M91 and NGC4571

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)
Getting plate-solving status, please wait...
Markarian’s Chain, M88, M91 and NGC4571, 



    
        

            Sinan Arkin
Powered byPixInsight

Markarian’s Chain, M88, M91 and NGC4571

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Acquisition details

Frames:
ZWO B 36mm: 214×120(7h 8′) (gain: 139.00) -15°C bin 1×1
ZWO G 36mm: 243×120(8h 6′) (gain: 139.00) -15°C bin 1×1
ZWO Ha 36mm: 154×300(12h 50′) (gain: 139.00) -15°C bin 1×1
ZWO L 36mm: 170×300(14h 10′) (gain: 139.00) -15°C bin 1×1
ZWO R 36mm: 233×120(7h 46′) (gain: 139.00) -15°C bin 1×1
Integration:
50h
Darks:
50
Flats:
50
Flat darks:
50
Bias:
120
Bortle Dark-Sky Scale:
6.00

RA center: 12h30m58s.70

DEC center: +13°3303.3

Pixel scale: 1.474 arcsec/pixel

Orientation: -42.523 degrees

Field radius: 1.769 degrees

More info:Open 

Resolution: 8021x3231

File size: 50.3 MB

Locations: Bellapais, Kyrenia, Cyprus

Data source: Backyard

Description

Two-panel mosaic of the Markarian’s Chain, M88, M91 and NGC4571.

This project has been extremely difficult and frustrating for me. The problems started with faulty calibration frames and no way of redoing them due to the changes in the imaging train, then the tilt in the blue filter and background gradient problems due to light pollution under Bortle 6 skies which were compounded by the calibration issues. I am just happy to be able to show something “acceptable” for all the work that’s gone into it. This project has been “baptism by fire” for me and will make me think twice before attempting another broadband mosaic project from my backyard.

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