Submission: 2019 May

See new, spectacular, or mysterious sky images.
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Re: Submission: 2019 May

Post by barretosmed » Sat Jun 01, 2019 2:46 pm

Carina Nebula
An image with a mixture of captures from the interior of Minas Gerais (Munhoz-MG) with the capital of Sao Paulo (São Paulo-SP)

The Carina Nebula (NGC 3372) is a massive region of star formation within the Milky Way. Officially discovered by the French astronomer Nicolas Louis de Lacaille in the 1750s, the nebula extends 300 light-years across, so large and bright that it is easy to spot with the naked eye. With a telescope, even more detail unfolds - but all that detail is in visible light



TS 80mm 6 elements
Asi 160mm
LRGBHalpha baader
15x 300 "Halpha
45 150x100 LRGB

04/20/2018 HALPHA in Sao Paulo- SP- Brazil
03 and 04/05/2019 LRGB Munhoz - MG - Brazil
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Re: Submission: 2019 May

Post by Bi2L » Sat Jun 01, 2019 4:57 pm

Milkyway above Devils Tower

Nigh landscape at Devils Tower, the Wyoming's Bear Lodge Butte in Crook County, Wyoming.

Devils Tower is a butte, possibly laccolithic, composed of igneous rock in the Bear Lodge Ranger District of the Black Hills, near Hulett and Sundance in Crook County, northeastern Wyoming, above the Belle Fourche River. It rises 386m above the Belle Fourche River. The summit is 1559m. above sea level.

The name Devil's Tower originated in 1875 during an expedition led by Colonel Richard Irving Dodge, when his interpreter reportedly misinterpreted a native name to mean "Bad God's Tower".
Native American names for the monolith include: "Bear's House" or "Bear's Lodge" or "Bear's Tipi", "Home of the Bear", "Bear's Lair"; Cheyenne, Lakota Matȟó Thípila, Crow Daxpitcheeaasáao "Home of Bears", "Aloft on a Rock" (Kiowa), "Tree Rock", "Great Gray Horn", and "Brown Buffalo Horn" (Lakota Ptehé Ǧí).

Canon eos 6D, EF85-lii 1.2, 85mm, f/1.2, iso1600, 5X6sec, Deepskystacker
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Re: Submission: 2019 May

Post by KuriousGeorge » Tue Jun 11, 2019 1:55 pm

Ann wrote:
Thu May 30, 2019 5:23 am
KuriousGeorge wrote:
Tue May 28, 2019 2:58 pm
NGC 467, 470 & 474. KG Observatory, Julian CA.

Imaging telescope or lens:Planewave CDK24
Imaging camera:FLI Proline 16803
Mount:Planewave L600
Guiding camera:Starlight Xpress Ultrastar
Focal reducer:None
Software:PHD Guiding 2, PixInsight 1.8, Planewave PWI4, Planewave PWI3, Maxim DL6, Neat Image V7, Photoshop CS3, Sequence Generator Pro
Filters:Astrodon 50mm B, Astrodon 50mm R, Astrodon 50 mm G, Astrodon 50mm L
Accessories:FLI CFW-5-7, Astrodon Monster MOAG, Hedrick Focuser, Planewave Delta-T, Planewave EFA
Resolution: 3620x3708
Dates:Nov. 1, 2018, Nov. 5, 2018, Nov. 6, 2018, Nov. 7, 2018

Astrodon 50 mm G: 13x900" -20C bin 1x1
Astrodon 50mm B: 16x900" -20C bin 1x1
Astrodon 50mm L: 40x900" -20C bin 1x1
Astrodon 50mm R: 15x900" -20C bin 1x1
Integration: 21.0 hours
Darks: ~20
Flats: ~80
Flat darks: ~80
Bias: ~20
Avg. Moon age: 27.00 days
Avg. Moon phase: 12.03%
Mean SQM: 21.40
Locations: KG Observatory, Julian, CA, United States
I love the colors of this image! Note that of the three large galaxies in the picture, NGC 467 is a soft shade of orange. NGC 470 in the middle has a yellow center and a pale blue-white ring, and NGC 474 at right is a pale yellow color which bleeds into off-white in the outer shells.

These colors are perfect! Indeed, NGC 467 is the reddest of the lot. Its U-B and B-V colors are 0.55 and 1.05, respectively. NGC 474, the "intermediate color" one, has U-B and B-V indexes of 0.38 and 0.86. And NGC 470, the spiral ring galaxy, has U-B and B-V colors of 0.10 and 0.75. The higher the number, the redder the galaxy, and the lower he number, the bluer the galaxy. You got it perfectly right!

The red colors of NGC 467 suggests that this galaxy hasn't formed stars for a long time. The fantastic shell galaxy NGC 474 formed stars more recently, particularly in its outer shells. In the outermost shell structures, some star formation may still be going on. And NGC 470 is clearly forming stars in its broad blue ring. Your perfect colors tell us important facts about these three galaxies!

Thank you Ann for the great feedback! Sorry I just saw this now. This is super helpful. Thanks again!