[AZ-Observing] Re: M101 Uploaded to Pbase

  • From: "Wayne (aka Mr. Galaxy)" <mrgalaxy@xxxxxxxx>
  • To: az-observing@xxxxxxxxxxxxx
  • Date: Sat, 5 May 2012 17:53:03 GMT

Benson, AZ 85602
hm ph: 520-586-2244 Good shot, Jim. You forgot to mention that the recent SN in 
M101 is still quite obvious as a very blue object left aways from the nucleus. 
It has faded quite a bit because it was brighter than the two guardian stars 
above and below it. Do you have a coma corrector?
Clear skies, 
Wayne (aka Mr. Galaxy)
---------- Original Message ----------
From: "Jim Waters" <james.t.waters@xxxxxxx>
To: <EVAC@xxxxxxxxxxxxxx>, <az-observing@xxxxxxxxxxxxx>
Subject: [AZ-Observing] M101 Uploaded to Pbase
Date: Fri, 4 May 2012 21:39:09 -0700

All;


I uploaded an image I took of M101 last month to PBase.



http://www.pbase.com/jtwaters/image/143095888



I could have used another 60 minutes of &#65533;Lights&#65533; to increase 
detail and
color but M101 was approaching the zenith.  There&#65533;s also some 
differential
flexure between the imaging scope and guiding setup.  Focus was a bit off.
Tracking was shot at 2 second intervals and was OK.  It could have been
better.  I think the tracking star was SAO 28988. The stock AstroTech
focuser was replaced with a MoonLite focuser.  No filters were used.  The
image was shot ~11 miles SE of Fredericksen Meadow through some camp-fire
smoke (34&#65533;34&#65533;22.98N/111&#65533;19&#65533;59.17W).  There was 
little to no wind.  The image
is JPEG &#65533; 8 Bit.  In all I am happy with the image.



In the image I can identify the following NGC objects:

-          NGC 5474 Spiral Galaxy

-          NGC 5447

-          NGC 5461

-          NGC 5462

-          NGC 5471

-          NGC 5449

-          NGC 5451

-          NGC 5477 Spiral Galaxy

-          NGC 5485 Spiral Galaxy

-          NGC 5473 Elliptical Galaxy

-          NGC 5422 Spiral Galaxy



Imaging Scope &#65533; 8&#65533; F/4 AstroTech with MPCC

Guide Scope &#65533; 80mm F/5 Refractor

Guider &#65533; Orion SSAG, PHD Guide 1.13.4

Mount &#65533; Celestron CGEM (stock mount)

Camera &#65533; Canon T3i (G. Honis Modified)

Imaging &#65533; 18ea 420 Second Lights @ ISO 800, 18 Darks, Bias and Flats.
Ambient Temp &#65533; ~9 degrees Celsius.  Chip temperature was about 19 degrees
Celsius.

Processing SW &#65533; ImagesPlus 4.50A, Saved to JPEG &#65533; 8Bits, TIFF File
~105MBytes.

Image Acquisition SW &#65533; Backyard EOS 2.0.3





Jim Waters

SAC / EVAC


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