Starship Asterisk*

Posted: **Fri Mar 01, 2019 6:05 pm**

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Posted: **Fri Mar 01, 2019 6:38 pm**

Hubble's Variable Nebula - NGC 2261

Copyright Mark Hanson

Description by "Sakib Rasool"

"Like a cosmic flower, Hubble's Variable Nebula is a lovely reflection that appears to sprout from the bright star R Monocerotis. Otherwise catalogued as NGC 2261 by the astronomer John Louis Emil Dreyer in 1888 in his iconic New General Catalogue, this nebula was discovered in 1783 by William Herschel. It is also famous for the being the first deep sky object to have been photographed with the Hale Telescope at the Palomar Observatory in 1949 by none other than Edwin Hubble.

The popular name of this nebula arises from it being studied by Edwin Hubble in 1916 who noticed it changed in brightness. It is now known that its dramatic and quite quick changes in brightness and appearance are the result of opaque clouds of dust situated between the star and the nebula. The appearance of NGC 2261 has been observed to change on timescales of a few months if not a few days!

The reddish nebulosity visible to the north of NGC 2261 is an example of a Herbig Haro object, a type of jet ejected by a young star that glows by the energy generated by the gas colliding with its surrounding space. They were originally independently discovered by the astronomers George Herbig and Guillermo Haro. This Herbig Haro object is catalogued as HH 39 and more than a thousand are currently known. An analysis of the proper motion of the knots in HH 39 show that it is moving away from R Monocerotis and NGC 2261."

LRGBHa 300,180,180,180,450 Taken with a PlaneWave 24" CDK from Animas New Mexico.

You can see the full versions here: https://www.hansonastronomy.com/hubble-veriable-nebula

Thank you,
Mark

Posted: **Fri Mar 01, 2019 7:21 pm**

Comet C/2018 Y1 Iwamoto between nebulae and star clusters
C/2018 Y1 Iwamoto on 28.02.2019 between IC 417 and open clusters M 38 and NGC 1907
Copyright: Velimir Popov, Emil Ivanov Irida Observatory

: Click to view full size image 1 or image 2

More info and hi-res images on website

Posted: **Fri Mar 01, 2019 7:57 pm**

M78 complex LRGB with 10" Lacerta Photonewton

full size and data https://www.astrobin.com/391831/ image of the day

the Pipe with 300mm Fullframe

full size and data https://www.astrobin.com/388309/

thanks for viewing and clear skies!
Tommy

Posted: **Sat Mar 02, 2019 4:59 am**

markh@tds.net wrote: ↑Fri Mar 01, 2019 6:38 pm Hubble's Variable Nebula - NGC 2261

Copyright Mark Hanson

HVN-LRGBsmall.jpg
HVN-LRGBHasmall.jpg

Description by "Sakib Rasool"

"Like a cosmic flower, Hubble's Variable Nebula is a lovely reflection that appears to sprout from the bright star R Monocerotis. Otherwise catalogued as NGC 2261 by the astronomer John Louis Emil Dreyer in 1888 in his iconic New General Catalogue, this nebula was discovered in 1783 by William Herschel. It is also famous for the being the first deep sky object to have been photographed with the Hale Telescope at the Palomar Observatory in 1949 by none other than Edwin Hubble.

The popular name of this nebula arises from it being studied by Edwin Hubble in 1916 who noticed it changed in brightness. It is now known that its dramatic and quite quick changes in brightness and appearance are the result of opaque clouds of dust situated between the star and the nebula. The appearance of NGC 2261 has been observed to change on timescales of a few months if not a few days!

The reddish nebulosity visible to the north of NGC 2261 is an example of a Herbig Haro object, a type of jet ejected by a young star that glows by the energy generated by the gas colliding with its surrounding space. They were originally independently discovered by the astronomers George Herbig and Guillermo Haro. This Herbig Haro object is catalogued as HH 39 and more than a thousand are currently known. An analysis of the proper motion of the knots in HH 39 show that it is moving away from R Monocerotis and NGC 2261."

LRGBHa 300,180,180,180,450 Taken with a PlaneWave 24" CDK from Animas New Mexico.

You can see the full versions here: https://www.hansonastronomy.com/hubble-veriable-nebula

Thank you,
Mark

Thank you, Mark I like both versions of your image. Am I right to suppose that the red background in one of the images is scattered Hα?

Ann

Posted: **Sat Mar 02, 2019 5:43 am**

Ann wrote: ↑Sat Mar 02, 2019 4:59 am
markh@tds.net wrote: ↑Fri Mar 01, 2019 6:38 pm Hubble's Variable Nebula - NGC 2261

Copyright Mark Hanson

HVN-LRGBsmall.jpg
HVN-LRGBHasmall.jpg

Description by "Sakib Rasool"

"Like a cosmic flower, Hubble's Variable Nebula is a lovely reflection that appears to sprout from the bright star R Monocerotis. Otherwise catalogued as NGC 2261 by the astronomer John Louis Emil Dreyer in 1888 in his iconic New General Catalogue, this nebula was discovered in 1783 by William Herschel. It is also famous for the being the first deep sky object to have been photographed with the Hale Telescope at the Palomar Observatory in 1949 by none other than Edwin Hubble.

The popular name of this nebula arises from it being studied by Edwin Hubble in 1916 who noticed it changed in brightness. It is now known that its dramatic and quite quick changes in brightness and appearance are the result of opaque clouds of dust situated between the star and the nebula. The appearance of NGC 2261 has been observed to change on timescales of a few months if not a few days!

The reddish nebulosity visible to the north of NGC 2261 is an example of a Herbig Haro object, a type of jet ejected by a young star that glows by the energy generated by the gas colliding with its surrounding space. They were originally independently discovered by the astronomers George Herbig and Guillermo Haro. This Herbig Haro object is catalogued as HH 39 and more than a thousand are currently known. An analysis of the proper motion of the knots in HH 39 show that it is moving away from R Monocerotis and NGC 2261."

LRGBHa 300,180,180,180,450 Taken with a PlaneWave 24" CDK from Animas New Mexico.

You can see the full versions here: https://www.hansonastronomy.com/hubble-veriable-nebula

Thank you,
Mark
Thank you, Mark I like both versions of your image. Am I right to suppose that the red background in one of the images is scattered Hα?

Ann

Ann, Yes the first image has no Ha in it but the second one has Ha added. Thanks, Mark

Posted: **Sat Mar 02, 2019 6:53 am**

Comet C/2018 Y1 Iwamoto & IC410 & IC405

Comet C / 2018 Y1 Iwamoto as it passes through the area of the nebulae of the tadpoles IC410 and the Flame IC405

Date 2019 02 28
La Jonquera - Girona - Spain
Canon 6D + Star71
RGB - 4 x 90" ISO 12800
H, S, O - 7x900" ISO 3200

Large image

Large image, annotated version

José Jiménez

Posted: **Sat Mar 02, 2019 6:53 am**

Comet C/2018 Y1 Iwamoto & IC410 & IC405

Comet C / 2018 Y1 Iwamoto as it passes through the area of the nebulae of the tadpoles IC410 and the Flame IC405

Date 2019 02 28
La Jonquera - Girona - Spain
Canon 6D + Star71
RGB - 4 x 90" ISO 12800
H, S, O - 7x900" ISO 3200

José Jiménez

Posted: **Sat Mar 02, 2019 7:19 am**

Medusa Nebula with the DSLR:

Used a cold night in February to collect photons of that faint planetary nebula in the constellation Gemini with a 10inch Newtonian reflector and APS-C sized DSLR.

Posted: **Sat Mar 02, 2019 2:06 pm**

Comet C/2018 Y1 Iwamoto
on March 1st 2019 near IC 405 (Flaming Star Nebula)
Copyright: Velimir Popov, Emil Ivanov Irida Observatory

: Click to view full size image

More info and hi-res images on website

Posted: **Sat Mar 02, 2019 6:35 pm**

Rosette nebula

Copyright: Thomas LELU

Posted: **Sat Mar 02, 2019 7:49 pm**

Witch Head Nebula from Grand Mesa Observatory by Transient Astronomer, on Flickr

Image Credit and Copyright: Grand Mesa Observatory, Terry Hancock, Tom Masterson

Posted: **Sun Mar 03, 2019 12:57 pm**

Horsehead and Flame
by Reinhold Wittich

: Click to view full size image

Posted: **Sun Mar 03, 2019 3:13 pm**

Località: San Romualdo - Ravenna
Tecnosky AG70 su ASA DDM60PRO
QSI583ws raffreddata -20 - Filtri RGB Astrodon RGB GenII E-series
HA-RGB: HA (15x7' Bin2), R (15x2'), G (14x2'), B (14x2') in Bin1

Cristina Cellini

Posted: **Mon Mar 04, 2019 2:09 am**

Copyrights: Raul Villaverde & Domingo Pestana

Reflejos by Raul Villaverde, en Flickr

Posted: **Mon Mar 04, 2019 9:37 am**

Copyright: Raul Villaverde Fraile

Messier 97-108 by Raul Villaverde, en Flickr

Posted: **Mon Mar 04, 2019 5:17 pm**

Lasers and clouds at Paranal by Juan-Carlos Munoz-Mateos, on Flickr

Posted: **Mon Mar 04, 2019 7:37 pm**

Starting the galaxy season - NGC 2903:

The spiral galaxy NGC 2903 in the constellation Leo has been my first target in the 2019 galaxy season. Imaged with a 10inch Newtonian reflector and APS-C sized DSLR, right from my garden.

Posted: **Tue Mar 05, 2019 8:08 am**

Hello
I submit you this Clavius and Blancanus picture.
Very little time in a life the sky allows in the Rhône valley in France to exploit almost fully the capabilities of large telescopes like my newton 24" that I built. It lasted 20 minutes on the night of February 15. I was able to image some craters like them in high resolution. The focal length used is 10920 mm (barlow 4), red filter 610, camera QHY5-III 178M.
Clear skies.
Luc CATHALA

Full résolution : https://cdn.astrobin.com/thumbs/vCIblZK ... hqkGbg.jpg

Posted: **Thu Mar 07, 2019 12:04 pm**

Rosette Nebula to Cone Nebula

Mosaic Rosette Nebula to Cone Nebula in SHO

Date February 2019
La Jonquera - Girona - Spain
Canon 6D + Star71+ Optolong Narrowband filters, H-alpha, OIII & SII
6x900" x 3 ISO 3200

Large image

Large image, annotated version

José Jiménez

Posted: **Thu Mar 07, 2019 5:24 pm**

Images in Ha and Ha+RGB (zoomed).
Copyrigh: Aldo Mottino

Posted: **Thu Mar 07, 2019 9:35 pm**

Colors of the moon by Andre van der Hoeven, on Flickr

Posted: **Fri Mar 08, 2019 9:38 am**

NGC 3718 - twisted galaxy in Ursa Major:

Used my 10inch Newtonian reflector and DSLR to capture that lovely galaxy which interacted in the past with its neighbour NGC 3729 to get that specific shape. Also of interest the far distant galaxy group south of NGC 3718 called Hickson 56.

Posted: **Fri Mar 08, 2019 7:34 pm**

Simeis 147 Spaghetti Nebula

Sh2-240 - Simeis 147 in SHO + RGB

Date February 2019
La Jonquera - Girona - Spain
Canon 6D + Star71+ Optolong Narrowband filters, H-alpha, OIII & SII
6x1500" H-alpha - ISO 3200
6x1500" SII - ISO 3200
6x1500" OII - ISO 3200
15x600" RGB - ISO 1600
Flats, Darks & Bias

Large image

Large image, annotated version

José Jiménez

Posted: **Fri Mar 08, 2019 8:34 pm**

Hi my name is Josef and I'm an 18 year old photographer from Cornwall.
I thought you might like this shot that I took at about 4am this morning!

Starship Asterisk*

Submission: 2019 March

Submission: 2019 March

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Comet C/2018Y1 Iwamoto in Auriga

Orion at your feet

Messier 97 & 108

Re: Submission: 2019 March

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Clavius and Blancanus

Re: Submission: 2019 March

Fire in the sky (NGC 2024)

Re: Submission: 2019 March

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