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M103 question

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#1 Dennis_S253

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Posted 22 August 2014 - 10:25 PM

Messing around with my Zixen R130Sf tonight with the CG-4 and the RA drive motor hooked up. It seems to be tracking well. Just wondering, if your looking at M103 what do you see? I see 5 prominent stars with the ES82 8.8 at 73.8X. Should I be seeing more? Do I need to barlow this thing? It's not the greatest night so far but it's clearing nicely. Maybe it will look better later.

#2 Starman1

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Posted 22 August 2014 - 11:23 PM

The image here:

http://messier.seds.org/m/m103.html

pretty much matches the view in my scope.

Really deep photos show a lot of stars (perhaps >1000).

But visually, it's a much smaller number.



#3 Dennis_S253

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Posted 22 August 2014 - 11:43 PM

Thanks Don, I guess That answers my question very well. Visual through a 130 I guess I did ok. Should have took out the 12" but I need my rest. Better times are coming soon.

#4 Tony Flanders

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Posted 23 August 2014 - 05:48 AM

Messing around with my Zixen R130Sf tonight with the CG-4 and the RA drive motor hooked up. It seems to be tracking well. Just wondering, if your looking at M103 what do you see? I see 5 prominent stars with the ES82 8.8 at 73.8X. Should I be seeing more? Do I need to barlow this thing? It's not the greatest night so far but it's clearing nicely. Maybe it will look better later.


Yes, there are five prominent stars, and through a small scope under bright skies that's all that I see. However, there's also a swarm of much fainter stars enveloping the center of the pattern. I would expect them to be visible at 74X through a 5-inch scope, but they certainly wouldn't be prominent. It might well depend on your sky conditions.

#5 Dennis_S253

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Posted 23 August 2014 - 10:15 AM

Thanks Tony, I was thinking about the swarm. I thought I should be seeing it. Last night was not the greatest because it was raining most of the day. There was a lot of moisture in the air. Better days are coming.


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