IC417 and Surrounding Field (Ken Sablinsky)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: 24 Aur · 24 phi Aur · IC 417 · LBN 794 · LBN 804 · LBN 810 · LDN 1516 · LDN 1526 · LDN 1530 · M 38 · NGC 1907 · NGC 1912 · NGC 1931 · Sh2-234 · Sh2-237 · The star φ Aur

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IC417 and Surrounding Field

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IC417 and Surrounding Field

First light with my new mount, the Astro-Physics 1100-AE, and also my first completely unguided image!

I bolted the guide scope to the system, thinking perhaps I'd need to guide a little since I did a rough polar alignment with the RAPAS polar scope that hasn't been calibrated to the mount yet. But after doing a dec arc model of about 50 points along the path of the object, I found each frame showed nice small round stars. So I never bothered to turn on the guidescope. No more worrying about lost guide stars, or waiting for the guide star to settle between exposures. Dithering is now direct mount movement set to 0.5 seconds -- those extra seconds waiting for the autoguider to settle between exposures really add up.

Final
Original
B

B

Title: NGC1931 and reflection nebula

Description: A closeup crop of part of the larger image, showing NGC1931 and some reflection nebula that wasn't identified in the plate solve.

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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	6648756
PixInsight job	88NZDS9CAPEDU2Q84F1S9CS8VJF3TQVA
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h28m07s.40
RA (top/left)	05h23m14s.38
RA (top/right)	05h23m10s.87
RA (bottom/right)	05h32m50s.40
RA (bottom/left)	05h33m15s.13

Dec (center)	+34°25′16″.6
Dec (top/left)	+35°59′48″.9
Dec (top/right)	+32°51′43″.7
Dec (bottom/right)	+32°49′44″.9
Dec (bottom/left)	+35°58′10″.0

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IC417 and Surrounding Field

IC417 and Surrounding Field

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Image Index:

Contribution Index (beta):

IC417 and Surrounding Field

IC417 and Surrounding Field

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

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