On Tuesday, June 13, 2017 at 9:09:48 AM UTC-7, Razzmatazz wrote:
On Tuesday, June 13, 2017 at 2:52:30 AM UTC-5, Martin Brown wrote:
On 13/06/2017 00:06, Razzmatazz wrote:
M13 is now at a good point, high up at night. A quick (very quick) look at this bauble.

https://www.astromart.com/common/ima...7.jpg&caption=

AP 17" F8 Astrograph
STL11K camera
Single 5 minute Luminance exposure
AP1600 mount

Magnificent! How long an exposure?

Can you find the very small background galaxy in this image? It's at magnitude 18.

Is it the streak about 1/5 across and just over half way up left side?

I quite like the little asterism near the bottom with two equal
brightness stars symmetrically either side of a brighter one making a
fake Saturn appearance. 1/3 across the bottom.



--
Regards,
Martin Brown

The exposure was 5 minutes, a single exposure.
Yes, the mag 18 galaxy is about half way up the left side.

Razzy

Ouch!!! Mag 18 galaxy, you need Hubble to see that?