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M101_100galaxies June_2017 Aleix_Roig | by Astrocatinfo
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M101_100galaxies June_2017 Aleix_Roig

This wide field image of the Ursa Majoris region shows more than one hundred galaxies. The most distant are 3500 million light years away and occupy only a few pixels. The most prominent, The Pinwheel Galaxy (M101), it's a Milky Way like galaxy "only" 21 million light years from us.

 

Image taken with a 8,5cm aperture telescope from Prades, Spain.

 

INFORMATION and technical data:

 

M101, The Pinwheel Galaxy, imaged from PRADES during 7 nights from 22nd of May until 2nd of June.

Halpha has been used to enhance the HII regions.

 

L: 300x180" bin1

RGB: 30x90" each bin2

Halpha: 35x600" bin1

 

23h total exposure for this wide field image.

 

Equipment:

 

FSQ85

ASI1600MM-Cooled

Mesu200

LRGB Ha Baader filters

ZWO EFW and OAG, with ASI174 MC

 

Software used:

 

Sequence Generator Pro, PHD2, DSS, PixInsight.

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Uploaded on June 18, 2017