Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Coddington's Nebula  ·  IC 2574
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ic 2574 - 570 60 secs unguided subs in 2 windy nights, 



    
        

            Stefano Ciapetti
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ic 2574 - 570 60 secs unguided subs in 2 windy nights

Getting plate-solving status, please wait...
ic 2574 - 570 60 secs unguided subs in 2 windy nights, 



    
        

            Stefano Ciapetti
Powered byPixInsight

ic 2574 - 570 60 secs unguided subs in 2 windy nights

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

Imaging cameras: QHYCCD 183m

Mounts: Ioptron Cem60

Filters: Hutech IDAS LPS2  ·  Baader Planetarium H-alpha 50nm narrowband filter

Accessory: Baader MPCC Mark III


Dates:March 14, 2021March 19, 2021

Frames:
Baader Planetarium H-alpha 50nm narrowband filter: 420x60" (7h) (gain: 16.00) -20C bin 2x2
Hutech IDAS LPS2: 130x60" (2h 10') -20C bin 2x2

Integration: 9h 10'

Darks: 360

Avg. Moon age: 3.25 days

Avg. Moon phase: 15.79%

Bortle Dark-Sky Scale: 8.00


Astrometry.net job: 4328938

RA center: 10h 28' 13"

DEC center: +68° 25' 9"

Pixel scale: 0.984 arcsec/pixel

Orientation: 152.756 degrees

Field radius: 0.375 degrees


Resolution: 2340x1434

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

Data source: Backyard

Description

This image is the sum of 570 60 secs unguided subs taken on th the nights of the 14th March and 19th march 2021 with an Orion USA 250 F3.9, a QHY183M on top of a Ioptron CEM60EC. Color frames have been taken by an Acuter 90 ED, reduced at F 6.7, and a modded Canon 600d, sitting on top of the Newton.

Both nights were windy, but the night of the 19th was very windy, with wind speed over 35 knots. Most of the subs were ruined, especially the Orion/Qhy183 ones.

Results didn't meet my expectation for the bad weather condition, but also because this subject is very, very tough and weak. Aquisition was done by Astroart 7. For QHY183 subs, stacking with Astroart 7 and processing with PS. Stacking was done by DSS for Canon 600d subs.

IC 2574, also known as Coddington's Nebula, is a dwarf spiral galaxy discovered by American astronomer Edwin Foster Coddington in 1898. Located in Ursa Major, a constellation in the northern sky, it is an outlying member of the M81 Group. It is believed that 90% of its mass is in the form of dark matter. (Wikipedia)

Comments

Revisions

  • Final
    ic 2574 - 570 60 secs unguided subs in 2 windy nights, 



    
        

            Stefano Ciapetti
    Original
  • ic 2574 - 570 60 secs unguided subs in 2 windy nights, 



    
        

            Stefano Ciapetti
    B
  • ic 2574 - 570 60 secs unguided subs in 2 windy nights, 



    
        

            Stefano Ciapetti
    C
  • ic 2574 - 570 60 secs unguided subs in 2 windy nights, 



    
        

            Stefano Ciapetti
    D
  • ic 2574 - 570 60 secs unguided subs in 2 windy nights, 



    
        

            Stefano Ciapetti
    E
  • ic 2574 - 570 60 secs unguided subs in 2 windy nights, 



    
        

            Stefano Ciapetti
    F

B

Description: 162 120 secs unguided subs taken with an Acuter 90ED reduced to F6.7 and a modded Canon 600d during the nights of 14th and 19th of March on top of a Newton 250 F3.9, taking the mono subs.

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C

Description: combination of mono and colour image

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D

Description: trying to bring up stars color

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E

Description: color adjustment

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F

Description: background color adjustments

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Sky plot

Sky plot

Histogram

ic 2574 - 570 60 secs unguided subs in 2 windy nights, 



    
        

            Stefano Ciapetti