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.
LRGB Ha Baader filters
ZWO EFW and OAG, with ASI174 MC
Sequence Generator Pro, PHD2, DSS, PixInsight.