IC1805 The Heart of Hearts (Duane Melvin)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15851 · HD236966 · IC 1805 · LBN 650 · LBN 654 · LBN 655 · LDN 1360 · LDN 1361 · LDN 1362 · LDN 1363 · LDN 1364 · LDN 1365 · LDN 1366 · LDN 1367 · LDN 1368 · LDN 1369 · LDN 1372 · Sh2-190

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IC1805 The Heart of Hearts

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IC1805 The Heart of Hearts

Bortle 2 Skies, Otahki Lake, Mo. USA spanning two nights
Antlia 2-inch 3nM narrowband filters for the SHO creation process
Exposures: 12.53 Hours of light integration, spanning two nights

60 Ha 300S
40 OIII 301S
50 SII 302S

8 Darks 180S -15C
No flats, DF, or bias frames were implemented

QHY 268m Pro main cooled astronomy camera, with CCD sensor APS-C format,16 Bits, 26 MegaPixels
Esprit 100ED APO Triplet Refractor 100mm x 550mm with supplied corrector, 40mm image circle, no Reduction

EQ6R PRO mount
PHD guiding with Orion 80mm x 300mm refractor doublet, and Starshoot TM camera on ST4 direct to mount
Synscan hand control with QHY Polemaster RA exact NCP alignment system and one-star alignment (Caph)
SVBony wrap heaters on main and guide scope objective dew shields

Dell Alienware x17 8K laptop for all activities
APT capture
no plate solving or autofocusing used, Synscaninit cell app, hand focused once using Bahtinov mask
Telescopius telescope simulator, and Stellarium app
Deepskystacker
Pixinsight and RC AI tools to include Blur and StarXterminator
PS with Starspikes 4.0 and Topaz Labs AI noise reducer
Adobe Lightroom

Clear Skies!

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	8636816
PixInsight job	66FRMIFPEXGQ359QWECO6ZCUZO8N6W67
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h33m05s.74
RA (top/left)	02h30m33s.22
RA (top/right)	02h43m03s.57
RA (bottom/right)	02h35m50s.73
RA (bottom/left)	02h23m24s.49

Dec (center)	+61°33′19″.5
Dec (top/left)	+60°20′34″.0
Dec (top/right)	+61°58′23″.9
Dec (bottom/right)	+62°45′50″.7
Dec (bottom/left)	+61°05′37″.8

Image Index:

Contribution Index (beta):

IC1805 The Heart of Hearts

IC1805 The Heart of Hearts

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IC1805 The Heart of Hearts

IC1805 The Heart of Hearts

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