Astrophotography

That is really nice image especially with a DSLR.

Just a note.

Ifound out there is a problem with Nebulosity 4 and an ATIK 460 camera. The software produces bright halos at the top of the screen. Nebulosity 2 and Sequence Generator work fine.

Dave


---------- Original Message ----------
From: "Astrophotography" <astrophotography@centexastronomy.org>
To: "jde209@netzero.net" <jde209@netzero.net>
Subject: re: IC 344, Jellyfish Nebula, Sh2-248 <<$217663844235$>>
Date: Thu, 08 Nov 2018 13:49:54 -0600




I failed to post the image in my original message. It is there now, as it is here.

Attachment(s):
File: 20181108-IC344_color_stack_stretch.jpg (786.3 KB) -- Address: http://s3.amazonaws.com/ClubExpressClubFiles/901132/attach/2176638_0_20181108-IC344_color_stack_stretch.jpg

Hey Jeff,
You did the namesake of this object justice.
The jellyfish is swimming across the sky.
Very nice job despite the not so good conditions.

Johnny

Sent from my iPhone

> On Nov 8, 2018, at 1:49 PM, Astrophotography <astrophotography@centexastronomy.org> wrote:
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> I failed to post the image in my original message. It is there now, as it is here.
>
> Attachment(s):
> File: 20181108-IC344_color_stack_stretch.jpg (786.3 KB) -- Address: http://s3.amazonaws.com/ClubExpressClubFiles/901132/attach/2176638_0_20181108-IC344_color_stack_stretch.jpg
>
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Good Image Jeff. How are things at Eldorado?

Aubrey

-----Original Message-----
From: mailer@mail2.clubexpress.com <mailer@mail2.clubexpress.com> On Behalf Of Astrophotography
Sent: Thursday, November 08, 2018 1:50 PM
To: abrickhouse1@att.net
Subject: re: IC 344, Jellyfish Nebula, Sh2-248 <<$217663844235$>>




I failed to post the image in my original message. It is there now, as it is here.

Attachment(s):
File: 20181108-IC344_color_stack_stretch.jpg (786.3 KB) -- Address: http://s3.amazonaws.com/ClubExpressClubFiles/901132/attach/2176638_0_20181108-IC344_color_stack_stretch.jpg

I failed to post the image in my original message. It is there now, as it is here. 

I finally got tired of looking at the bottom of cloud cover and rented some time from iTelescope last night. Using their T3 rig in New Mexico I got this image of IC 344. It is composed of ten-300 second color images shot with a SBIG ST-4000XCM camera mounted on a Takahashi TOA-150 Apo refractor. Nebulosity 4 was used for initial processing with fine tuning in Lightroom 5 and Apple's Photos Apps. I spent about six hours processing this image as it was a booger to pull the details out of the surrounding H-a cloud while retaining detail. I would like to go back and reshoot this object in narrow band as I suspect it will be quite interesting.

For those interested in such things, IC 443 is a supernova remnant about 5,000 ly or 1.5 kpc from earth with a surface magnitude of +12 located in Gemini. It is also known as the Jellyfish Nebula, and SH 2-248. The hydrogen-alpha emission is not the result of the origin neutron-star's radiation but rather, like the Veil Nebula, from the molecular shockwave's impact on a relatively dense dark hydrogen cloud that had nothing to do with the supernova. The origin neutron star (CXOU J061705.3+222127) is only visible in the x-ray band by satellite. It is located to the lower right, outside the image and is traveling approximately 800,000 km/hr away from the remnant shell. It is an oddly behaving neutron star with a comet-like tail. There is a good article about it at https://www.sciencedaily.com/releases/2006/06/060601212933.htm.