NGC 891 (Sebastian "BastiH" Hinz)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: NGC 891

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NGC 891

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NGC 891

I tried to get as much detail as I could - given the fact that the 6D's pixel size and it's bayer matrix locate it's suitability rather on smaller focal lenghts. I used a 1.5x coma-correcting APM barlow lens to extend the focal lenght to 1500mm, took around 300 lightframes, used the subframe selector script in pixinsight to filter out the 81 best and weighted them by FWHM prior to stacking. For the latter, I did a 2x drizzle integration to preserve detail and to allow more headroom for post-processing. After that, I downscaled the image by factor 2 to compensate oversampling and hide the deficits ;-). Therefore, the result above represents the object's original size on the initial raw images.

D

Description: same as C, just a little less noise in red and green channel

Uploaded: ...

E

Description: same as B, just a little less noise in red and green channel

Uploaded: ...

F

Description: same as A, just a little less noise in red and green channel

Uploaded: ...

M

Description: same FOV as A and F, a little less greenish

Uploaded: ...

N

Description: same FOV as B and E, a little less greenish

Uploaded: ...

O

Description: same FOV as C and D, a little less greenish

Uploaded: ...

P

Description: crop - postprocessing completely redone for better colors and resolution

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Q

Description: full - postprocessing completely redone for better colors and resolution

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R

Description: little less red, more blue, more saturation

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S

Description: little less red, more blue, more saturation

Uploaded: ...

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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	2475802
PixInsight job	LP2VO0JGSYGB1Y8KYE1HSMEQ57PHYECF
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h22m32s.608
RA (top/left)	02h21m58s.171
RA (top/right)	02h22m00s.391
RA (bottom/right)	02h23m06s.897
RA (bottom/left)	02h23m05s.310

Dec (center)	+42°20′52″.89
Dec (top/left)	+42°29′07″.84
Dec (top/right)	+42°12′20″.72
Dec (bottom/right)	+42°12′37″.26
Dec (bottom/left)	+42°29′24″.70

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NGC 891

NGC 891

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Image Index:

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NGC 891

NGC 891

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Description

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D

E

F

M

N

O

P

Q

R

S

Sky plot

Histogram

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