A bit of a reward...

[MarsG76]

21 hours ago, Ags said:

Your argument is based on Euclidean geometry which Flat Earthers have long since disproved.

Careful.. anything "disproved" by flat earthers might actually be real...

[Xilman]

On 07/07/2022 at 21:09, Paul M said:

And very deserving it is too! I think Globs are, overall, my favorite DSO's. Mesmerising to look at, and mind boggling to think about.

Lots of pretty GCs to image.

I urge you to image difficult ones. Much more a sense of achievement, in my view. Try starting with a Mayall 2.  It's quite bright, easy to find and big enough not to appear stellar as long as you use a high enough magnification. It is M31's equivalent of our ω Centauri. Should be visible to someone looking through a 20cm scope and a decent but unexceptional sky, and easily within the range of a 60mm refractor and camera.

After that, pick up hundreds of GCs in M31 and M33; dozens in M81 and who knows how many in the Virgo cluster. M87 alone has over 12 thousand GCs known, hundreds of which are accessible to amateur imagers.

[Paul M]

1 hour ago, Xilman said:

Try starting with a Mayall 2

Ahhh!    look at the end of this post!

 

b l u n d e l l . j o h n 1 @ s k y . c o m

[Xilman]

Nice!

Thought about trying for other GCs in the Local Group, or even further afield?

I can point you at some of my images if you wish.

[Xilman]

17 minutes ago, Paul M said:

Ahhh!    look at the end of this post!

Just a thought: have you located stars of very similar brightness to the GC in your image and compared their appearance with Mayall II? Aladin-Lite will likely let you do that.

If other stars of that magnitude are noticeably smaller then you have shown that the GC is non-stellar.

IIRC, it is about 3 arcsec across. Within the seeing disk for most imagers but readily non-stellar for visual observers with their 100ms integration time.

[Paul M]

5 minutes ago, Xilman said:

Nice!

Thought about trying for other GCs in the Local Group, or even further afield?

I can point you at some of my images if you wish.

I always like to see other people's images so fire away!

[Xilman]

4 minutes ago, Paul M said:

I always like to see other people's images so fire away!

Happy to do so, but in this thread?  It is just about on-topic, IMAO, given that it started with an image of a GC.

Here is an image of 50-ish globular clusters. See https://britastro.org/observations/observation.php?id=20190311_020000_9a2c47fcf9f3ee97 for details of the observation. Different processing of the same data revealed another dozen or so, which is also available in my BAA gallery

[Xilman]

41 minutes ago, Paul M said:

Ahhh!    look at the end of this post!

Thought about trying for some difficult GCs in our galaxy?  Balbinot 1 is the hardest I have yet managed. I strongly recommend you start with much easier objects first, such as the Palomar GCs.

https://britastro.org/section_information_/deep-sky-section-overview/observing-programmes/globular-clusters/the-gc-marathons-part-i-galactic-globular-clusters

might get you started.

One day, if and when some round tuits become available, I will issue a first cut at the second article in the series.