M71 (lowenthalm) - AstroBin

Celestial hemisphere: Northern · Constellation: Sagitta (Sge) · Contains: FX Sge · M 71 · NGC 6838 · QU Sge · TYC1620-1124-1 · TYC1620-1144-1 · TYC1620-1226-1 · TYC1620-1232-1 · TYC1620-1460-1 · TYC1620-194-1 · TYC1620-226-1 · TYC1620-3264-1 · TYC1620-340-1 · TYC1620-3755-1 · TYC1620-384-1 · TYC1620-496-1 · TYC1620-500-1 · TYC1620-540-1 · TYC1620-586-1 · TYC1620-690-1 · TYC1620-706-1 · TYC1620-746-1 · TYC1620-88-1 · TYC1620-886-1 · TYC1620-950-1 · TYC1624-1644-1 · TYC1624-1726-1 · TYC1624-1944-1 · TYC1624-1982-1 · TYC1624-2046-1 · And 18 more.

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M71

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M71

Globular cluster M71 is one of my favorite visual targets, and its attractive with an image sensor too. It isn't as spectacular as some of some of the grander clusters like the Great Hercules Cluster, but the colorful star background of the Milky Way adds a lot of drama to the background that many of those "other" globular clusters don't have.

After color balancing it, I popped the saturation up here a little more than I usually do. It helps give it a little more depth, and makes it clearer what types of stars are present in the field.

Now that I have fixed a collimation stability problem I was having, I am going to work on improving the sharpness of stars in my globular cluster images. This one is ok, but I think seeing was good enough that I could have gotten the dimmer stars a bit sharper than they are. I may also have not focused recently enough when I imaged this. It got cold pretty fast the night I took this and I think the trusses on my dob were shrinking a bit - I had to refocus several times over the course of the evening.

Astrophotography with Dobson

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Moro

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	2260524
PixInsight job	85MMSPUHX5O239KE1C75ZZS7RQIHKJNX
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	19h53m43s.136
RA (top/left)	19h54m57s.886
RA (top/right)	19h53m15s.678
RA (bottom/right)	19h52m28s.249
RA (bottom/left)	19h54m10s.417

Dec (center)	+18°46′21″.15
Dec (top/left)	+18°48′02″.16
Dec (top/right)	+19°02′55″.79
Dec (bottom/right)	+18°44′36″.76
Dec (bottom/left)	+18°29′48″.21

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