Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

M33 - 3.11.2018 at 21.00 Fregenal de la Sierra, Espanja Observation number 79080

Visibility III / V

Tapio Lahtinen, Tampereen Ursa

While waiting for the actual item to rise higher, I did a little experiment that had been on my mind for a while.
That is, a galaxy image in Ha light alone.
And a slightly different picture of this came from the ‘skeleton’ of the galaxy.

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • M33
    • Keskitaso
  • 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.

Technical information

Sky-Watcher Esprit 100ED, 10 Micron GM 1000 HPS, Atik 460EX, 110 min Ha

Comments: 2 pcs
Kari Laihia - 4.11.2018 at 21.06 Report this

Tulipas hyvin näkyviin galaksin vetyrinkulat, niihin ei tule kiinnittäneeksi huomiota monivärikuvissa. Hyvä kokeilu.

Pertti Rautiainen - 4.11.2018 at 21.53 Report this

Hieno kuva. H_alpha on siitä jännä aallonpituus, että esim. monesta sauvaspiraaligalaksista sauva jokseenkin katoaa sillä aallonpituudella, spiraalihaarat kyllä näkyvät, samoin sauvaan liittyvät renkaat.

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