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stf1930

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#1 MrRoberts

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Posted 20 June 2020 - 09:04 AM

So night before last I was out just poking around for awhile with the 120. And of course M-5 was on the list. But I noticed what appeared to be a binary just lower and slightly east. 

So what the heck, I grabbed the 3.5 Delos and went for a look see. What a beautiful pair. The primary looked to be white'ish (maybe with a slight blue tint and the baby brother looked to have a pink'ish/orange tint).

When I got in I started up Starry Night and fount the pair.

Topped off a good night flowerred.gif


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#2 flt158

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Posted 20 June 2020 - 09:22 AM

Ah yes, I know that true binary, Mr Roberts!

 

Robert Burnham calls it 5 Serpentis. 

But of course STF 1930 is a good designation too. 

 

I get a nice split at 112X with my William Optics 158 mm F/7 apochromatic refractor. 

I do admire your colours. Very nice indeed. 

 

Thank you bringing this double to our attention!

 

Please give us more. 

 

Clear skies, 

 

Aubrey. 


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#3 c2m2t

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Posted 20 June 2020 - 12:49 PM

Greetings MrRoberts!!

Interesting double and a beautiful Messier globular cluster...warrants a couple of images for the those that have not traveled through this stellar neighbourhood. You describe the colours well...my narrow-field image supports your observation. 

 

Speaking about orange/red companions of physical pairs...Steve (ssmith)...if you are reading, STF 1930 looks like a potential candidate for our developing list.

 

Enjoy!!

 

Cheers, Chris.

 

 

Attached Thumbnails

  • M5-3529-sm-Labels.JPG
  • STF 1930-0275-2-pt-ns-Labels.jpg

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#4 nerich

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Posted 20 June 2020 - 01:03 PM

Chris, I know M5 wasn't your primary target, but what a stunning capture! That's how it looks in the eyepiece from a dark site. Well done, my friend. 


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#5 c2m2t

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Posted 20 June 2020 - 02:20 PM

Hi Nick!

Thank-you! Funny how you can tour an area for a specific target and not realize that the area contains other worthwhile whistle stops!! So much to look at and so little time to soak it all in. I wish I would have started this hobby in my teens...missed out on 40+ good years of starry skies...but making hay now, while the stars shine!!  grin.gif

 

Cheers, Chris.


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#6 ssmith

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Posted 21 June 2020 - 08:14 AM

Hi Chris -

 

Nice photos of 5 Ser & M5.  I had already added 5 Ser to the Red Secondaries list which is now up to 13 entries. I will post the list as it currently stands in the "Red Secondaries" topic. 

 

Here is a short exposure from 2014 taken with my SW100ED which shows the color contrast of 5 Ser nicely.  My more recent photos concentrated on M5 where the longer exposures tended to wash out the color contrast.

 

5 Ser STF1930 100mm 6-26-14 018 crop.jpg


Edited by ssmith, 21 June 2020 - 08:49 PM.

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