M51 @ 800mm focal length (urmymuse)

M51 @ 800mm focal length

M51 taken on Sunday night which was glorious from a clear skies point of view but not so good in terms of world events obv

Just over three hours integration using 60 subs

I stupidly didn't set dither going so first 40 or so subs were without dither

Guiding was good (for me) when I checked but this doesn't seem to have translated into round stars ... dooh

Had left the scope out from the Friday and didn't recheck collimation which perhaps I should have done

Used my 8" Orion astrograph which is 800mm focal length

I really need to get my 8" RC on these targets which has double the focal length but never really

used it successfully ... need to get a better guide scope is my current excuse on this

Anyway this deffo slightly better tan the version I got last year ... you can just see some whispy outer nebulosity if you look closely

Am guessing in need to triple integration time to capture the fainter stuff given my borttle 8 skies

Trip to dark skies site not on in near future given pandemic

Original
B
Final
C

B

Description: The wide field version ... really need a longer focal length for galaxy season

Uploaded: ...

C

Description: Having seen Ray's image I decided to try and make brighter without adding too much extra noise or losing what detail there is :)

Uploaded: ...

N.I.N.A. Users
Musical Imagers
UK Astro-Imaging
Yorkshire Astro Imaging

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

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
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

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 failed
Started	...
Astrometry.net job	3380296
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):