Sh2-134 Area, Ha (Stephen Garretson)

Sh2-134 Area, Ha

Sh2-134, or LBN 490, is a bright emission nebula in Cepheus, just east of IC 1396, the Elephant Trunk.

This image is the first combining data from the Borg 107 and the William Optics Star 71. Both scopes have excellent optics,are equipped with great filters, and capture on the same model cameras. All the data is from 6/26/23 [capture started after midnight]. The scope duo allows more efficient use of clear sky; e.g., this is just shy of 5 hours of data.

Seeing was pretty poor, though not as bad as the previous evening when stars were few and quite weak in the PHD window and selected guide stars were lost almost immediately. This session that condition started to again play out, so I elected to use 90s unguided exposures for the first hour [2 hours of data captured]. But then things improved enough that I could guide 600s exposures; RMS was over 1.00 all this time, but as long as my SNR was pretty good...75 to 98...guiding worked.

I stacked 90s and 600s separately and then combined masters using PixelMath; my normal processing routine for Ha then followed. Before the Moon makes life unbearable [getting close] I will try to capture at least OIII, and hopefully SII for other treatments.

[17] 600s guided Ha subs, [8] with Chroma filter and [9] with Baader filter
[80] 90s unguided subs, [40] with Chroma filter, [40] with Baader filter
total integration: 4 hours 50 minutes

capture:
Borg 107FL f/3.9 [6] element APO
Primalucelab Esatto Focuser
Starlight Xpress USB Filter Wheel
Baader 3.5nm Ha filter

William Optics Gen II Star 71 f/4.9 Petzval Astrograph
MicroTouch Focuser
ZWO EFW
Chroma 3nm Ha filter

guiding:
William Optics RedCat f/4.9 Petzval Astrograph
ASI 290M Mini

Paramount MX+

from the Beevo Dome

...Stephen

The refractors!
WO Star 71

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	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

	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

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	7939860
PixInsight job	V985JHGDOXYWTZOL3FEKSIMJBW2PNTMB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h12m15s.97
RA (top/left)	22h20m46s.43
RA (top/right)	22h20m06s.70
RA (bottom/right)	22h02m56s.47
RA (bottom/left)	22h05m09s.40

Dec (center)	+60°11′40″.4
Dec (top/left)	+58°40′18″.4
Dec (top/right)	+61°48′01″.4
Dec (bottom/right)	+61°40′49″.1
Dec (bottom/left)	+58°33′37″.2

Image Index:

Contribution Index (beta):

Sh2-134 Area, Ha

Sh2-134 Area, Ha

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Sh2-134 Area, Ha

Sh2-134 Area, Ha

Equipment

Acquisition details

Description

Comments

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?

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