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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

M31 - 6.10.2022 at 22.50 - 7.10.2022 at 03.00 Sipoo Observation number 109816

Visibility V / V

Mika Myllynen, Ursa (Helsinki)

Budget-class star photography. The lens that was in use cost €60 used. The budget can be seen in the processed picture, but you can be reasonably satisfied with this end result. 85% of the moon would otherwise light the bortle 5 sky quite pale, but since there haven't been too many of those bright nights now, I had to try... Total integration time 3h 16min, 60s exposures at ISO-800 and F/5 aperture. Nikon D3200 and Tamron 70-300 lens at about 200mm position. Tracking Star Adventurer, stacking DSS and further processing with fotar. 25 pieces of biases and 36 pieces of flats. More background in the blog:

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • M31
  • Constellation
    • Andromeda
  • Weather
    • Kosteahko keli, hajanaiset pilvilautat pilasivat muutamia frameja mutta pääosin kirkas ilma.

  • Darkness
    • Mediocre
  • Galaxies
    • Spiral galaxy info

      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.

Comments: 2 pcs
Timo Alanko - 7.10.2022 at 17.27 Report this

Eipä hassumpaa jälkikäsittelyä. Itsekin olen päässyt myös tuohon stäkättyyn vaiheeseen, mutta siitä eteenpäin into ja taito on hiipunut :(

Mika Myllynen - 7.10.2022 at 17.43 Report this

Kiitos Timo. Haastava homma, paljon oppimista tuon jälkikäsittelyn kanssa vielä itselläkin. Tutorialia on onneksi netti pullollaan, vähän kerrallaan oppii kuva kuvalta :)

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