Imaged with: AP Mach 1 GTO, 8" Orion Optics UK f/4.5 Newt, Modified Canon 350D with cooling, Baader MPCC, IDAS LPS-P2 filter. 9x8min @ ISO 800.
Crescent Nebula from Punggai
Crescent Nebula from Punggai
This was taken before the sky cleared up, the subs appeared very low in contrast. Quite a challenge to extract details from the hazy background.
Imaged with: AP Mach 1 GTO, 8" Orion Optics UK f/4.5 Newt, Modified Canon 350D with cooling, Baader MPCC, IDAS LPS-P2 filter. 9x8min @ ISO 800.
Imaged with: AP Mach 1 GTO, 8" Orion Optics UK f/4.5 Newt, Modified Canon 350D with cooling, Baader MPCC, IDAS LPS-P2 filter. 9x8min @ ISO 800.
-
shirox
- Posts: 1097
- Joined: Fri Nov 05, 2010 12:21 am
- Favourite scope: Takahashi FSQ85EDX
- Location: Outram
Re: Crescent Nebula from Punggai
sweeeeeeeeeeeeeeeeeeeeeeee
**************************************************************
http://eltonastronomy.blogspot.com/
Mersing finally installed some water sink!
http://eltonastronomy.blogspot.com/
Mersing finally installed some water sink!
Re: Crescent Nebula from Punggai
Nice! Thanks for sharing.
http://www.astro.sg
email: gary[at]astro.sg
twitter: @astrosg
"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.
email: gary[at]astro.sg
twitter: @astrosg
"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.
-
weixing
- Super Moderator
- Posts: 4708
- Joined: Wed Oct 01, 2003 12:22 am
- Favourite scope: Vixen R200SS & Celestron 6" F5 Achro Refractor
- Location: (Tampines) Earth of Solar System in Orion Arm of Milky Way Galaxy in Local Group Galaxies Cluster
Re: Crescent Nebula from Punggai
Hi,
Nice... so many stars!!![[smilie=admire.gif]](./images/smilies/admire.gif "admire")
Have a nice day.
Nice... so many stars!!
Have a nice day.
Yang Weixing
"The universe is composed mainly of hydrogen and ignorance."
"The universe is composed mainly of hydrogen and ignorance." -
Clifford60
- Posts: 1289
- Joined: Mon Sep 04, 2006 8:41 pm
- Location: Central
Re: Crescent Nebula from Punggai
Hi Kelvin, wondering why all stars are dots, this particular star in the yellow circle is a line?
You do not have the required permissions to view the files attached to this post.
Re: Crescent Nebula from Punggai
Good work!
It did look like you really stretched the pic to get the details! Do you know what is the cause of the low contrast?
By the way, just realized you got the Mach 1 GTO! How did you find it?
It did look like you really stretched the pic to get the details! Do you know what is the cause of the low contrast?
By the way, just realized you got the Mach 1 GTO! How did you find it?
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]
Re: Crescent Nebula from Punggai
Thanks guys for the compliments!
@ Clifford: You got sharp eyes, that's a post processing artifact. I was fighting differential flexure the whole night between the guide scope and main imaging ota. My 'poor man's' astrograph still need some sorting. You can see from the 8min raw sub-image below, the stars are oval. Did some star-rounding processing with PS, that may caused the streak you had highlighted.
@Andrew: Hazy sky caused the poor contrast, again you can see the as-shot sub above, it has very poor s/n ratio. Only with stacking several subs in order to boost the contrast on the finished image.
About the Mach 1, waited almost 2 years for it, but up till recently, AP has speed up their mounts production, the wait is within monts now not years, how I wish they can do the same for their scopes. It may cost an arm and a leg, but to a serious imager, this is worth every penny!It works flawlessly right out of the box, period. I wouldn't dare said so for most of my other astro gears.![[smilie=admire2.gif]](./images/smilies/admire2.gif "admire2")
@ Clifford: You got sharp eyes, that's a post processing artifact. I was fighting differential flexure the whole night between the guide scope and main imaging ota. My 'poor man's' astrograph still need some sorting. You can see from the 8min raw sub-image below, the stars are oval. Did some star-rounding processing with PS, that may caused the streak you had highlighted.
@Andrew: Hazy sky caused the poor contrast, again you can see the as-shot sub above, it has very poor s/n ratio. Only with stacking several subs in order to boost the contrast on the finished image.
About the Mach 1, waited almost 2 years for it, but up till recently, AP has speed up their mounts production, the wait is within monts now not years, how I wish they can do the same for their scopes. It may cost an arm and a leg, but to a serious imager, this is worth every penny!It works flawlessly right out of the box, period. I wouldn't dare said so for most of my other astro gears.
Re: Crescent Nebula from Punggai
Thanks for the info! Enjoy!
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]