Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_beauty_night_skies.thumb.jpg.2711ade15e31d01524e7dc52d15c4217.jpg

Dangerous-Dave

Four MW globular clusters

Recommended Posts

Hi folks, I imaged these on Sunday (19/4/09) and Tuesday (21/4/09) nights with my OMC140 and 20D. M3/M13 were imaged on Sunday night, when the seeing was better, and M53/M92 on Tuesday. The latter were much more of a processing challenge on account of their smaller size and lower brightness.

M3, Canes Venatici

3459901043_5abc12c107_o.jpg

Orion Optics OMC140, Canon EOS20D, Astronomik CLS clip filter, 13x300s at ISO1600, darks/flats/offsets subtracted.

M13, Hercules

3459681423_0dc986a1ea_o.jpg

Orion Optics OMC140, Canon EOS20D, Astronomik CLS clip filter, 19x300s at ISO1600, darks/flats/offsets subtracted

M53, Coma Berenices

3466774694_d85fa26bce_o.jpg

Orion Optics OMC140, Canon EOS20D, Astronomik CLS clip filter, 22x300s at ISO1600, darks/flats/offsets subtracted.

M92, Hercules

3466646238_417ebf3527_o.jpg

Orion Optics OMC140, Canon EOS20D, Astronomik CLS clip filter, 17x300s at ISO1600, darks/flats/offsets subtracted.

Here are the parameters for those of you interested in putting these things into context.

M          NGC/IC     Const         RA  (2000)    DEC           dist/Sun    dist/GC     Mag     Size
M3 NGC5272 Canes Ven 13:42:11.2 +28:22:32 33.9 kly 39.8 kly 6.19 18.0'
M13 NGC6205 Hercules 16:41:41.5 +36:27:37 25.1 kly 28.4 kly 5.78 20.0'
M53 NGC5024 Coma Ber 13:12:55.3 +18:10:09 58.0 kly 59.6 kly 7.61 13.0'
M92 NGC6341 Hercules 17:17:07.3 +43:08:11 26.7 kly 31.3 kly 6.44 14.0'

kly = thousands of light years

' = arc min

GC = galactic centre

Share this post


Link to post
Share on other sites

Nice collection of globs you have there Dave, seems like the OMC is well suited to those....:)

Alan:)

Share this post


Link to post
Share on other sites

A very nice collection, Dave - I especially like the M13. I normally enjoy taking images of these globulars but I have to say that my latest attempt at M3 on Tuesday night was a complete flop and I have yet to figure out what went wrong!

Well done anyway, great to see them nicely presented.

Share this post


Link to post
Share on other sites

Very nicely done and processed.

A big thumbs up.

Share this post


Link to post
Share on other sites

Great Globs, it's nice to see them all together like that.:)

Share this post


Link to post
Share on other sites

Globulicious....

Tonight - I have a cunning plan.... and I have booked tomorrow off work to hopefully make use of the last clear night of the weekend :( .....

Weather forecasts don't yah just..... :):):):):(

Share this post


Link to post
Share on other sites

I like! ..it's good to compare them like this, same scale, side by side, and see different characteristics between them.. and their vital statistics for reference too!

Top job !

Share this post


Link to post
Share on other sites

They are really nice globs! Must get out and try to catch some myself.....

Share this post


Link to post
Share on other sites

Thanks for the kind comments folks. Here is a montage of all four for quick comparison:

3468649083_c8279bea55_o.jpg

It's a shame more people overlook globs in favour of gas and galaxies so much. I remember being really inspired by shots of Omega Centauri, M13 and 47 Tucanae, reading Astronomy in the 1980s.

Share this post


Link to post
Share on other sites

Dont have a lot of interest in globs myself but these are superb Dave.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.