NGC 3718 and NGC 3729 (Haakon Rasmussen)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 3718 · NGC 3729

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NGC 3718 and NGC 3729

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NGC 3718 and NGC 3729

Phui! This is first light with my now several months old QHY183C. This is a difficult camera! The first session on NGC3718 I had to scrap! (Over 5 hours) I was using Sharpcap's recommendations on optimal exposure time, causing a very low SNR and not swamping the sensor. The finished integration frame was unusable! After asking fellow Astrobin users, I understand I had to up the Gain and exposure time! I ended up using Gain11 with 240 seconds. This i did successfully for 2 nights, but on the third night problems occurred again! This time the camera decided in the middle of the session that it would deliver every second frame blank! The size was the same, but there were no content! I lost yet another 2 hours of integration time. But now I am finished with this image. Over 34 hours was collected...I hope you like it. I present a cropped version first.

Original
B
Final
C

B

Description: This is the original full sized version.

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C

Description: Raised background brightness, inspired by IOTD.

Uploaded: ...

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	Distinct awarded users	Total awarded images
Image of the day
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Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Star trails
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Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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	Basic success
Started	...
Astrometry.net job	5794233
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 3718 and NGC 3729

NGC 3718 and NGC 3729

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Image Index:

Contribution Index (beta):

NGC 3718 and NGC 3729

NGC 3718 and NGC 3729

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