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M101 is a large face on multiple spiral barred galaxy in Ursa Major ( The Plough ) .
|M101 / Galaxy, type SB M|
|R.A.||14h 03m 26.437s (2000.0)|
|Dec.||+54° 19' 22.76" (2000.0)|
|Apparent Size||28.5 x 28.3''|
|Radial Velocity||241 km/s|
|Distance||20-26 million light years|
|Group of Galaxies||m101 group|
|Other IDs||UGC8981, NGC 5457,PGC50063|
UGC 6937,MCG 9-23-28
|Scope||135mm Canon Lens|
|Mount||Vixen GP-DX unguided|
|Exposure||80 mins total , 80 x 1 min unguided.|
|Post-processing||AA3, Dark framed,gradient removed.|
|Camera||Starlight Express hx516|
|Location||Claines Top Observatory|
|Date||11th April 2005|
First attempt at using a standard canon SLR lens attached to my hx516. The Astrovid adaptor had to
be lathed down such that the focal point could be reached. Very happy with this shot & will be able
to image M31 , M33 , M42 , the virgo cluster & others in one shot.
I had to 1/2 close the shutter manually, as too much light caused the stars to seriously pinch on one side.
No sharpening or any post processing on this image. Weather cool , no moon, seeing average until the clouds rolled in.
The negative image shows a few local fainter galaxies in the M101 group.
|Scope||8" Intes Micro MN-86 with 0.5 Focal reducer|
|Exposure||33 mins total , 100 x 20 sec|
|Post-processing||AA3, Dark framed,gradient removed, gentle DDP|
|Camera||Starlight Express hx516 with ICX424AL chip|
|Date||11th July 2005|