Starship Asterisk*

This data was acquired in July & August 2021 before the smoke situation out west got horrible. This is 32.5 hours of HOO data on the Crescent, or as I can't unsee now the "Brain with the Blue Combover Nebula".

Tech details and full size version available at astrobin: https://www.astrobin.com/jh11i8/C/

Hello friends!

I'm an astronomer from Brazil, and this is an image taken in August 2018 with the 4-m SOAR Telescope as part of our research on nearby galaxy evolution. This is NGC 6902 combining three filters (g, r, i), after approximately 1h30min total exposure. We are currently processing all our scientific images with the help of Luiz R. Silveira, a local astrophotographer.

Hope you enjoy!

4 down and 4 more to go to complete the collection. Ironically, Earth might prove the biggest challenge.

Venus, Mars, Jupiter and Saturn by V. Petkov, on Flickr

NGC 1788
larger: https://www.celestialobjects.net/resour ... 88_web.png

Milky Way Panorama

larger: https://www.celestialobjects.net/resour ... no_web.png

IC 1396 - Elephant Trunk Nebula

Shot in the "Hubble Palette"
At 28 Hours of Exposure time (168x600seconds) this is the most work I have put into a photo to date, and I am pretty happy with the results

Some nerdy bits...
The Hubble Palette is a false color mapping of gases (via 3-6nm narrow bands of visible light)

Sulfur mapped to Red
Hydrogen to Green
Oxygen to Blue

Using this color palette while not accurate to what you would see (pretty much all red) provides more scientific insight into what we are looking at.

~2400 Light years from Earth

(C) Chase M. Snelgrove
Elephant Trunk Final Full by Chase Snelgrove, on Flickr

Corona Australis Complex
lager: https://www.celestialobjects.net/resour ... 29_web.png

Global map of Jupiter from my balcony in Paris
https://twitter.com/JLucDauvergne
Copyright: Jean-Luc Dauvergne Larger image : http://www.astrosurf.com/eternity/temp/ ... 0to14s.jpg

The video done with these dat is visible here :
https://youtu.be/kI3osCGiTjA

tsg wrote: ↑Mon Oct 18, 2021 7:22 pm Hello friends!

I'm an astronomer from Brazil, and this is an image taken in August 2018 with the 4-m SOAR Telescope as part of our research on nearby galaxy evolution. This is NGC 6902 combining three filters (g, r, i), after approximately 1h30min total exposure. We are currently processing all our scientific images with the help of Luiz R. Silveira, a local astrophotographer.

Hope you enjoy!

Click to view full size image

I love that portrait of NGC 6902! The fact that it has been set inside a circular frame enhances the "wild roundness" of the galaxy, as if it was a mix of a windblown pinwheel and a majestic Ferris wheel, all lit up with multicolored lights.

Lovely image!

Ann

Rosso Ceriaco by Andrea Amici - Andrystix

I have dreamed of taking this photo for a very long time, but given its difficulty in taking it, I have always put it off.
I had been studying the ideal conditions for shooting for years.
Now I will tell you how I made "Rosso Ceriaco".
First of all you need to know the exact moment when the Moon rises, taking into account atmospheric refraction and the moon phase in primis.
Once this is done I have to look for a full Moon (at 100% - very difficult because we almost always see it practically at 98-99%) "pumped" with its coppery color emphasized by the diffusion of Raylight (vulgarly, the twilight light that passes through the gas of the Earth's atmosphere and meet the Moon).
Once I have calculated the exact moment and checked above all the weather conditions, I can understand through sites and apps where to post to insert a landscape or a subject in perspective in the shot (with the Moon in the background). In this case I was in Collemarino (20/10/21 6.30 pm - 7.30 pm).
The question now is: how did you get such a close-up view from Collemarino of the Ancona Cathedral? Simple (even if it actually isn't)! I took the photo with my telescope!
The peculiarity of the telephoto lens or telescope is to reduce the perspective effect between the various elements, so it is possible to mask or reduce the distance between various subjects within the frame.
Arrived a little early in the place studied previously, I mounted the telescope and through the adapters I inserted my reflex (you need to know, however, that the frame in the telescope is upside down, this to facilitate things, obviously I'm ironic).
The photo is the result of 2 single shots, subsequently processed, taken in the exact same position and with the same framing, one for the Moon (1/80 sec, ISO 1270) and one for San Ceriaco (5 sec, ISO 1600).
The focal length is calculated with the ratio between the length of my telescope (750mm) and its diameter (150mm), therefore f / 5.
Andrea Amici (@ andrystix on fb, instagram and fickr)

Elephant's Trunk Nebula (IC 1396) by Joe Schlaf, on Flickr

Image of Elephant's Trunk Nebula (IC 1396) - SHO palette combination with color shift treatment
Image data collected in Michigan in August. This image represents ~20 hours of integration time.

Photographer: Joe Schlaf
@astrojoetography

Nebulae of the Auriga constellation

Flaming star nebula
Officially known as IC405, the Flaming Star Nebula likes about 1500 light years and spans approximately 5 light years. The purple region's color is a mixture of red and blue light emitted by the star AE Aurigae but reflected to us by surrounding dust. The two regions are referred to as emission nebula and reflection nebula, respectively.

Tadpoles of IC 410
IC 410 is a faint and dusty emission nebula of more than 100 light-years across approximately 12,000 light-years away from Earth. The two tadpole like structures consist denser gas and dust and are approximately 10 light years long and are sites of ongoing star formation.

Spider and Fly nebulae
The spider-shaped gas cloud is an emission nebula labeled IC 417, while the smaller fly-shaped cloud on the right is referred to as NGC 1931 and is both an emission nebula and a reflection nebula.

Total exposure - 24.5 hours

NGC 2244 - Rosette (Skull) Nebula
Full Size (worth checking out): https://www.astrobin.com/full/oo1ltu/0/

Had been shooting this one while on my automated runs after the telescope finished with the Elephant Trunk from earlier. Just a little each night. Did not really expect much, but got to look at the data today, boy was a surprised...

I shot this a year ago, and struggled for weeks to get any meaningful detail. Oh the difference a year of lockdowns and practice can make... There are still other much nicer, but VERY happy with how this turned out...

Sometimes deep space is not so "deep" as we think... If our eyes could see the nebulosity, this guy would appear almost the size of a full moon in our night sky.... Its there for the taking, if your willing to count the photons


Rosette_2021_Full by Chase Snelgrove, on Flickr

Rosette Nebula in HOO Palette
60x180" subframe taken with an ASI 183 MC-Pro and Celestron RASA 8" with Optlong L-eNahance filter.
HOO Palette mixed with:
R = Ha;
G = 55% of OIII and 45% of Ha;
B = OIII

Full res: https://astrob.in/full/7sjv8g/B/

Hello,
A 4 tiles LRGBHa with my ASA10. about 20 hours.
The full is here. https://cdn.astrobin.com/thumbs/bvfenv- ... tu4xk0.jpg

The Butterfly Cluster

Copyright: Nicolas Adriano

Image URL: https://cdn.astrobin.com/images/67318/2 ... 2d7490.jpg
Acquired by CHI-1 telescope system from Telescope Live

Telescope: Planewave CDK24
Camera: FLI ProLine PL9000
Filters: Astrodon LRGB 2GEN
Mount: Mathis MI-1000/1250 with absolute encoders
Location: El Sauce Observatory - Río Hurtado, Coquimbo Region, Chile

L: 1x600s
R: 2x600s
G: 1x600s
B: 2x600s and 1x300s
Total Integration Time: 60' or 1hr.

The Witch and the Hunter's Moon
https://tripswithrosie.com
Copyright: Rositsa Dimitrova Date: 21/10/2021

Halloween is just around the corner, so beware of witches and ghosts all around
Single shot, Sony A7iii & Sony G 200-600

Some structures within the Heart
Click on above for larger image.

Full info and higher resolution @ https://www.kinchastro.com/heart-nebula-2021.html

Supernova Remnant: The Veil Nebula

This is a 4-panel mosaic totaling 80 hours of exposure time captured in Ha and OIII. Each panel is 40 x 15 minute subs in Ha and OIII shot at 0.88"/pixel resolution.

The Veil has always been one of my favorite objects in the sky and I've always wanted to shoot a high-resolution image of the entire target. I finally completed that this summer and this is the resulting image.

Copyright: Matt Dahl

Supernova Remnant: The Veil Nebula by Matt Dahl, on Flickr

Icarian spooky cave and Big Dipper.

M45 by William Ostling, on Flickr

A full write up is available here: https://theastroenthusiast.com/the-gran ... r-cluster/

Perhaps the most famous star cluster on the sky, the bright stars of the Pleiades can be seen without binoculars from even the depths of a light-polluted city. With a long exposure from a dark location, though, the dust cloud surrounding the Pleiades star cluster becomes very evident.

Two techniques were used to get this image: framing selection and downsampling. I chose only about 65% of the frames that I actually shot, removing bad signal from out of focus, cloudy, or polluted frames. I also downsampled the image by 50% increasing snr and the amount of dust I imaged.

Website: https://theastroenthusiast.com/
Instagram: https://www.instagram.com/the_astronomy_enthusiast/

http://halfa.webcindario.com/sh2-155-_H ... I-ESTA.jpg
Hola a todos, haber que os parece mi nebulosa de la cueva o Sh2-155, es muy tenue y me ha costado sacar los colores sin estropear mucho las estrellas, de todas formas espero que al menos os guste, estos son los datos,
TOMAS:
H alfa: 12 Light de 900 segundos; 30 flats,12 darks y 40 bias
OIII: 9 Light de 900 segundos; 30 flats, 9 darks y 40 bias
SII: 18 Light de 900 segundos; 30 flats, 18 darks y 40bias
PALETA:
HUBBLE
R= SII
G= H-alfa
B= OIII
L= H-alfa
TEMPERATURA: -10 GRADOS
TUBO: FSQ 106 ED
CCD: SBIG ST-8300M
MONTURA: CGEM
CCD guiar: QHY5II
LUGAR: TORREJÓN DE ARDOZ y LAS INVIERNAS (GUADALAJARA)

The Fighting Dragons of Ara NGC6188 by V. Petkov, on Flickr

CORONA LUNAR


It's not exceptional but so beautiful to see
Our moon and its beautiful corona in the dawn of October 23 ...
The sky was well covered it was a mystical and beautiful atmosphere... ( With Pleaides )
Canon EOS Rebel T5i ( 700D )
Sigma DG - 70/300 mm f/4 - 5.6
ISO 100 ExpTime 1.6s 100mm

IC 434 and Flame nebula in large fov :
rgb by 43x480" frames shooted with Asi 071 and Epsilos 180 from remote observatory in Colorado - rgb of Asi blended with my previous works in Lrgb with Sbig 16200 and others instruments

IC 434 and Flame nebula by gc.iaffaldano, su Flickr

Copyright Dean Salman and Iaffaldano GC.