Rho Ophiuchus Molecular Cloud Complex (Michael Feigenbaum)

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: 106 Dione · 12.43 · 19 omi Sco · 20 sig Sco · 21 alf Sco · 22 i Sco · 23 tau Sco · 5 rho Oph · 9 ome Oph · Alniyat · Antares · B229 · B42 · IC 4596 · IC 4603 · IC 4604 · IC 4605 · M 4 · M 80 · NGC 6093 · NGC 6121 · NGC 6144 · Part of the constellation Scorpius (Sco) · Scorpius · The star 22Sco · The star Al Niyat (σSco) · The star Antares (αSco) · The star οSco · The star ρOph · The star τSco · And 3 more.

Powered byPixInsight

Rho Ophiuchus Molecular Cloud Complex

Powered byPixInsight

Rho Ophiuchus Molecular Cloud Complex

A favorite area of the sky for me... I had to try to do this one again. On this I used a rather economical Oshiro 135mm lens and a Nikon D5300.

The lens is f2.8 fully open. I sort of stopped it in between detents at about f3.4 to minimize vignetting and I was pleased that I did not get bad diffraction spikes. But was really surprising was that I did not get CA. I do not know why as this is not an apo lens and is not even advertised as being an ED lens.

Of course, any comments and/or criticism always appreciated!

CS to all,

Mike

Original
Final
C

C

Description: I was dissatisfied with this image because there seemed to be no reds in there, at least not what I expected. I reprocessed and did a 2x drizzle which I believe helps with the inherent undersampling. And then some reds appeared. I suspect the original problem was in DBE. But anyway, here is a new revisions which I hope is an improvement over the original.

Uploaded: ...

AstroBin Platform open discussions community forum
Cloudy Nights

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	Advanced success
Started	...
Astrometry.net job	2760556
PixInsight job	Q1ZIFGVLHH51CNBLZFB50UIGJ549OVRW
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	16h25m58s.55
RA (top/left)	16h12m14s.23
RA (top/right)	16h12m43s.58
RA (bottom/right)	16h40m45s.43
RA (bottom/left)	16h38m12s.51

Dec (center)	-25°05′57″.1
Dec (top/left)	-20°26′55″.2
Dec (top/right)	-29°53′14″.2
Dec (bottom/right)	-29°39′51″.7
Dec (bottom/left)	-20°14′07″.0

Image Index:

Contribution Index (beta):

Rho Ophiuchus Molecular Cloud Complex

Rho Ophiuchus Molecular Cloud Complex

Equipment

Acquisition details

Description

Comments

Revisions

C

Sky plot

Histogram

In these public groups

Image Index:

Contribution Index (beta):

Rho Ophiuchus Molecular Cloud Complex

Rho Ophiuchus Molecular Cloud Complex

Equipment

Acquisition details

Description

Comments

Revisions

C

Sky plot

Histogram

In these public groups

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

Delete this revision?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information