NGC 4236 - 19.11.2022 at 01.24 Orimattila, Artjärvi, Tähtikallio Observation number 111146

• Observation target
• • Deep space object
• Designation
• • NGC 4236
• Constellation
• • Draco
• Field of view
• 31 arc minutes
• Weather

• • Kuu 27 % vaiheessa nousemassa, selkeää, tyyntä

• Darkness
• • Average
• Seeing
• • Good
• Limiting magnitude
• • 5.5
• Galaxies
• • Spiral galaxy

    Spiral galaxy is a stellar system where there are outwards arched spiral arms from roundish (spiral galaxies) or bar-shaped (barred spiral galaxies) central condensation.

    The apparent shape of spiral galaxied depends on out observation direction. From above they are quite round. From the side they lens-shaped with a bulge in the middle.

    Generally a rather large instrument, good weather conditions and observational expereince are needed to see spiral arms. Usually spiral galaxies look like a fuzzy spots.

    

    Spiral galaxy M33 in Triangulum. Image Tero Turunen.

     

    

    Andromeda Galaxy M31. There are also galaxies M110 (upper right corner) and M32 (lower left corner) in this image. Image Pekka Peura.
    
    

    

    M101 aka Pinwheel Galaxy in Ursa Major. Image Samuli Vuorinen.

     

    

    Spiral galaxy IC 342 aka Hidden Galaxy in Camelopardalis. Image Timo Inkinen.
    
    

    

    A sketch of spiral galaxy NGC 7331 in Pegasus. Image Juha Ojanperä.

Alluna RC16, C415/3320, Moravian G4-16000 EC Mark II, with filter L 11 x 120 s, with filters R, G and B all 6 x 120 s, 20 x bias, 20 x dark, 10 x flat, 3x binning, picture delimited