Comet ISON And Mercury In The Morning Sky

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Comet ISON and Mercury in the morning sky
Taken by Rudolf Posch on November 22, 2013 @ Ternitz, Austria

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Camera Used: SAMSUNG NX1000
Exposure Time: 60/10
Aperture: f/5.6
ISO: 3200
Date Taken: 2013:11:22 22:35:34

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Details:

Samsung NX1000 F/5.6 77 mm ISO 3200. 6s exposure single shot (not stacked). I submit this photo despite ISON is barely visible because I am so happy to have catched finally ISON by myself after so many foggy nights in Austria!

Photographer's website:

http://rudipo.blogspot.co.at/2013/11/finally-i-caught-ison.html

Comments

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For ISON brightness comparison: The faint star Iam Vir has 4.52 and ET Vir has 4.95 magnitude (source: Redshift 4).

Posted by RudiPo 2013-11-22 16:42:03

I understand your joy to have recorded ISON. It shows you git up early and braved the cold. took images early morning 21st Nov. I have not inspected images on pc screen yet but I couldnt see comet but didnt have its exact position. Is there a way to retrospectively place a coordinate grid on an image to allow the location of the comet to be inpected on the image? I assume two known objects would be needed? I also wondered if another image could be taken on a different time and date just to get a couple of objects such mercury and spica and the positions for a given time on that date might allow RA and Dec to be worked out. My images show mercury like yours and some stars. But I suspect the sky or exposure was too bright, but I will feel like you if I have also recorded ISON, Derek

Posted by orionstar1 2013-11-23 09:03:21

Hello orionstar1, I use the astronomy programs Redshift 4 (older) and Stellarium (freeware) on my Windows PC for displaying the area where the comet is at a certain date/time seen from my home location. In Redshift you have to load extra the user data (ephemeris) of comet ISON into the program data base, in Stellarium ISON is in the database by default. I compare the stars on my photos with the stars the e.g. Stellarium screenshot displays near the comet. See my latest blog entry Finally I caught comet ISON http://rudipo.blogspot.co.at/2013/11/finally-i-caught-ison.html
and two olde blog entries from ISON!

Posted by RudiPo 2013-11-26 06:35:53

Thanks Rudi. I have neither program but have skyeye app for samsung/android. I dont have a working pc at the moment except borrowed. I could let you have an image I took which shows mercury and you might be able to see if I got ison? Derek

Posted by orionstar1 2013-11-26 16:21:41

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