Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

M31 - 9.11.2017 at 00.00 - 9.11.2017 at 01.20 Ulvila Observation number 68216

Visibility III / V

Juha Ojanperä, Jarkko Suominen, Porin Karhunvartijat

Last night, Jarkko Suominen introduced me to the use of our association's CCD camera. The weather was clear, but the Moon approaching from the last quarter roared in the sky. The targets during the training session were selected from the Screens and the Andromeda Galaxy. The finished image has a total exposure of 20 minutes (LRGB, 5 x 1 minute for each channel). This image is an untreated single frame (1 min, L-channel), the image has only been instant stretched in Pixinsight and saved as a jpg. Processed pictures in the future!

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • M31
    • Keskitaso
  • Constellation
    • Andromeda
  • Field of view
  • 1.8 degrees
  • Weather
    • Selkeää, vähenevä Kuu taivaalla
  • Darkness
    • Mediocre
  • Seeing
    • Average
  • Galaxies
    • Elliptic galaxy info

      Elliptic galaxy is an oval or roundish shaped distant stellar system, which have no spiral arms. These galaxies look as fuzzy spots with telescopes.


      The elliptic galaxy Centaurus A aka NGC 5128 in the middle of image is splitted by a dust lane. Image Toni Veikkolainen.

    • 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.

Technical information

Telescope: Boren-Simon 20 cm Newton, f2.8, camera: SBIG ST-3800 m, filters: LRGB, each channel 5 x 1 min

Comments: 4 pcs
Tapio Lahtinen - 9.11.2017 at 11.49 Report this

Vähän hassun näköiset tähdet.

Juha Ojanperä - 9.11.2017 at 11.55 Report this

Joo, liekö fokusoinnissa sittenkin ollut jotain ongelmia

Tapio Lahtinen - 9.11.2017 at 12.02 Report this

Ongelma voi liittyä myös kameran etäisyyteen reduuserista ja/tai kamera ei ole suorassa optiseen akseliin nähden. Nämä nopeat putket on vähän haastavia säätöjen suhteen.

Jarkko Suominen - 9.11.2017 at 13.11 Report this

Tarkennus tehtiin ilman erityisiä apuvälineitä, joten siinä on ainakin parantamisen varaa. Kamera on myös melko painava ja yritti koko ajan vinoon reducerin kanssa, joten tuo optinen ajselikin heittänee. Tarvii vain löytää aikaa jotta saadaan nuo korjattua.

Send a comment

Comments are checked and moderated before publication If you want to contact the observer directly about possibilities to use these images, use the Media -form.



characters left

By sending in this comment I confirm, that I've read and understood the the observation system's privacy policy.