|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
ASTRO: Arp 188/UGC10214 and SN 2008dq
Finally a night with stars after 2 months. Unfortunately the dimmest
ones visible were about mag 2.8 overhead rather than 6.5 like I normally have and clouds kept blocking the light. So while I say 60 minutes of L data its more like 15 under "normal" conditions here. I have watched a lot of Arp galaxies I'd hoped to take move too far west during my 2 months of clouds and super bright moon right in the imaging area of the sky. So when it looked like it would clear the night of July 1 (UTC) I started looking for an Arp that was still around. Arp 188/UGC 10214 The Tadpole Galaxy was only an hour past the meridian when it got dark enough to image so it became my target. First sub showed something wrong. A star where the DSS plates showed none. Turned out to be a SN found by the Lick SN survey scope June 25.3. Yes the decimal is correct as it indicates 3 tens of a day past midnight UTC. Anyway it was reported at mag 18.3. I get Mag 18 but there's the glow of the galaxy to contend with so I may have not dealt with that properly. Lots of faint fuzzies but I've not had a chance to investigate them as yet. You're on your own this time. The SN is 6.2" north and 7.2" west of the nucleus. I didn't put in indicator marks as it is the only star near the nucleus so easy to spot. 14" LX200R @ f/10, L=6x10' binned 2x2, RGB=2x10 binned 3x3, STL-11000XM, Paramount ME While seeing was great through all the haze what with the lousy transparency and only 120 minutes of dark skies I had no time for 1x1 imaging. For the Lick discovery photo see: http://www.supernovae.net/snimages/ It is about the 5th image down as I type this. Direct link without data is: http://astro.berkeley.edu/~bait/2008/sn2008-u10214.gif Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
#2
|
|||
|
|||
ASTRO: Arp 188/UGC10214 and SN 2008dq
The system still works!... good detail and can see the star band... I have
never got a good image of this one... hope I get a chance at it too. -- Regards, Doug W. www.photonsfate.com "Rick Johnson" wrote in message . com... Finally a night with stars after 2 months. Unfortunately the dimmest ones visible were about mag 2.8 overhead rather than 6.5 like I normally have and clouds kept blocking the light. So while I say 60 minutes of L data its more like 15 under "normal" conditions here. I have watched a lot of Arp galaxies I'd hoped to take move too far west during my 2 months of clouds and super bright moon right in the imaging area of the sky. So when it looked like it would clear the night of July 1 (UTC) I started looking for an Arp that was still around. Arp 188/UGC 10214 The Tadpole Galaxy was only an hour past the meridian when it got dark enough to image so it became my target. First sub showed something wrong. A star where the DSS plates showed none. Turned out to be a SN found by the Lick SN survey scope June 25.3. Yes the decimal is correct as it indicates 3 tens of a day past midnight UTC. Anyway it was reported at mag 18.3. I get Mag 18 but there's the glow of the galaxy to contend with so I may have not dealt with that properly. Lots of faint fuzzies but I've not had a chance to investigate them as yet. You're on your own this time. The SN is 6.2" north and 7.2" west of the nucleus. I didn't put in indicator marks as it is the only star near the nucleus so easy to spot. 14" LX200R @ f/10, L=6x10' binned 2x2, RGB=2x10 binned 3x3, STL-11000XM, Paramount ME While seeing was great through all the haze what with the lousy transparency and only 120 minutes of dark skies I had no time for 1x1 imaging. For the Lick discovery photo see: http://www.supernovae.net/snimages/ It is about the 5th image down as I type this. Direct link without data is: http://astro.berkeley.edu/~bait/2008/sn2008-u10214.gif Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
#3
|
|||
|
|||
ASTRO: Arp 188/UGC10214 and SN 2008dq
Very good image Rick. Amazing you even got good colour under such
conditions. Stefan "Rick Johnson" schrieb im Newsbeitrag . com... Finally a night with stars after 2 months. Unfortunately the dimmest ones visible were about mag 2.8 overhead rather than 6.5 like I normally have and clouds kept blocking the light. So while I say 60 minutes of L data its more like 15 under "normal" conditions here. I have watched a lot of Arp galaxies I'd hoped to take move too far west during my 2 months of clouds and super bright moon right in the imaging area of the sky. So when it looked like it would clear the night of July 1 (UTC) I started looking for an Arp that was still around. Arp 188/UGC 10214 The Tadpole Galaxy was only an hour past the meridian when it got dark enough to image so it became my target. First sub showed something wrong. A star where the DSS plates showed none. Turned out to be a SN found by the Lick SN survey scope June 25.3. Yes the decimal is correct as it indicates 3 tens of a day past midnight UTC. Anyway it was reported at mag 18.3. I get Mag 18 but there's the glow of the galaxy to contend with so I may have not dealt with that properly. Lots of faint fuzzies but I've not had a chance to investigate them as yet. You're on your own this time. The SN is 6.2" north and 7.2" west of the nucleus. I didn't put in indicator marks as it is the only star near the nucleus so easy to spot. 14" LX200R @ f/10, L=6x10' binned 2x2, RGB=2x10 binned 3x3, STL-11000XM, Paramount ME While seeing was great through all the haze what with the lousy transparency and only 120 minutes of dark skies I had no time for 1x1 imaging. For the Lick discovery photo see: http://www.supernovae.net/snimages/ It is about the 5th image down as I type this. Direct link without data is: http://astro.berkeley.edu/~bait/2008/sn2008-u10214.gif Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
#4
|
|||
|
|||
ASTRO: Arp 188/UGC10214 and SN 2008dq
What I do in this type of situation -- very poor color data -- is to use
LLRGB. You make a standard LRGB but set the L image at 50%. This gives better color to the LRGB but the low resolution of the RGB. Then I push the color saturation a bit. This gives a much better RGB image than the original with less noise but its still fuzzy just not as fuzzy or as muted as the original RGB. The point is you get a good RGB with low noise compared to just pushing the saturation of the RGB that was mostly noise. Now use this as the RGB with the original L image. Now you can again push the saturation of the final 100% combine as the RGB is much cleaner this go around. See Gendler's link for details. It really works. Not as well as good color data in the first place but it rescues situations like this one. On a good night but with time limited due to dawn or clouds or the object getting too low such that I can get only one frame of each color it is a life saver. One round of color is just too little even on a perfect night. But with the LLRGB technique it's almost equal to my normal 2 10 minute color frames using standard LRGB. http://www.robgendlerastropics.com/LLRGB.html BTW, thunderstorms returned last night and its been cloudy with high winds all day here. Doesn't appear it will improve until tomorrow -- maybe. So today we were clearing more of the dozens of downed trees from prior storms when suddenly a 2' diameter popple fell right at us. We were on a steep slope with tons of downed limbs so couldn't move in time. Fortunately it got hung up mid fall. Branches and debris rained down but that sure beat a ton of wood falling on us. Now we have that "widow maker" to deal with. I'm in firewood for years to come! Just wish I was 20 years younger to have the stamina to work 8 hours a day on it. Seems I run out of gas before the chain saw any more Rick Stefan Lilge wrote: Very good image Rick. Amazing you even got good colour under such conditions. Stefan "Rick Johnson" schrieb im Newsbeitrag . com... Finally a night with stars after 2 months. Unfortunately the dimmest ones visible were about mag 2.8 overhead rather than 6.5 like I normally have and clouds kept blocking the light. So while I say 60 minutes of L data its more like 15 under "normal" conditions here. I have watched a lot of Arp galaxies I'd hoped to take move too far west during my 2 months of clouds and super bright moon right in the imaging area of the sky. So when it looked like it would clear the night of July 1 (UTC) I started looking for an Arp that was still around. Arp 188/UGC 10214 The Tadpole Galaxy was only an hour past the meridian when it got dark enough to image so it became my target. First sub showed something wrong. A star where the DSS plates showed none. Turned out to be a SN found by the Lick SN survey scope June 25.3. Yes the decimal is correct as it indicates 3 tens of a day past midnight UTC. Anyway it was reported at mag 18.3. I get Mag 18 but there's the glow of the galaxy to contend with so I may have not dealt with that properly. Lots of faint fuzzies but I've not had a chance to investigate them as yet. You're on your own this time. The SN is 6.2" north and 7.2" west of the nucleus. I didn't put in indicator marks as it is the only star near the nucleus so easy to spot. 14" LX200R @ f/10, L=6x10' binned 2x2, RGB=2x10 binned 3x3, STL-11000XM, Paramount ME While seeing was great through all the haze what with the lousy transparency and only 120 minutes of dark skies I had no time for 1x1 imaging. For the Lick discovery photo see: http://www.supernovae.net/snimages/ It is about the 5th image down as I type this. Direct link without data is: http://astro.berkeley.edu/~bait/2008/sn2008-u10214.gif Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
#5
|
|||
|
|||
ASTRO: Arp 188/UGC10214 and SN 2008dq
totally cool Rick
That tail reminds me of a spinning top awesome! "Rick Johnson" wrote in message . com... Finally a night with stars after 2 months. Unfortunately the dimmest ones visible were about mag 2.8 overhead rather than 6.5 like I normally have and clouds kept blocking the light. So while I say 60 minutes of L data its more like 15 under "normal" conditions here. I have watched a lot of Arp galaxies I'd hoped to take move too far west during my 2 months of clouds and super bright moon right in the imaging area of the sky. So when it looked like it would clear the night of July 1 (UTC) I started looking for an Arp that was still around. Arp 188/UGC 10214 The Tadpole Galaxy was only an hour past the meridian when it got dark enough to image so it became my target. First sub showed something wrong. A star where the DSS plates showed none. Turned out to be a SN found by the Lick SN survey scope June 25.3. Yes the decimal is correct as it indicates 3 tens of a day past midnight UTC. Anyway it was reported at mag 18.3. I get Mag 18 but there's the glow of the galaxy to contend with so I may have not dealt with that properly. Lots of faint fuzzies but I've not had a chance to investigate them as yet. You're on your own this time. The SN is 6.2" north and 7.2" west of the nucleus. I didn't put in indicator marks as it is the only star near the nucleus so easy to spot. 14" LX200R @ f/10, L=6x10' binned 2x2, RGB=2x10 binned 3x3, STL-11000XM, Paramount ME While seeing was great through all the haze what with the lousy transparency and only 120 minutes of dark skies I had no time for 1x1 imaging. For the Lick discovery photo see: http://www.supernovae.net/snimages/ It is about the 5th image down as I type this. Direct link without data is: http://astro.berkeley.edu/~bait/2008/sn2008-u10214.gif Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
#6
|
|||
|
|||
ASTRO: Arp 188/UGC10214 and SN 2008dq
Hi Rick, Your image shows good detail in that small galaxy and a few
others. Joe "Rick Johnson" wrote in message . com... Finally a night with stars after 2 months. Unfortunately the dimmest ones visible were about mag 2.8 overhead rather than 6.5 like I normally have and clouds kept blocking the light. So while I say 60 minutes of L data its more like 15 under "normal" conditions here. I have watched a lot of Arp galaxies I'd hoped to take move too far west during my 2 months of clouds and super bright moon right in the imaging area of the sky. So when it looked like it would clear the night of July 1 (UTC) I started looking for an Arp that was still around. Arp 188/UGC 10214 The Tadpole Galaxy was only an hour past the meridian when it got dark enough to image so it became my target. First sub showed something wrong. A star where the DSS plates showed none. Turned out to be a SN found by the Lick SN survey scope June 25.3. Yes the decimal is correct as it indicates 3 tens of a day past midnight UTC. Anyway it was reported at mag 18.3. I get Mag 18 but there's the glow of the galaxy to contend with so I may have not dealt with that properly. Lots of faint fuzzies but I've not had a chance to investigate them as yet. You're on your own this time. The SN is 6.2" north and 7.2" west of the nucleus. I didn't put in indicator marks as it is the only star near the nucleus so easy to spot. 14" LX200R @ f/10, L=6x10' binned 2x2, RGB=2x10 binned 3x3, STL-11000XM, Paramount ME While seeing was great through all the haze what with the lousy transparency and only 120 minutes of dark skies I had no time for 1x1 imaging. For the Lick discovery photo see: http://www.supernovae.net/snimages/ It is about the 5th image down as I type this. Direct link without data is: http://astro.berkeley.edu/~bait/2008/sn2008-u10214.gif Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". ---------------------------------------------------------------------------- ---- |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[sci.astro,sci.astro.seti] Contents (Astronomy Frequently Asked Questions) (0/9) | [email protected] | Astronomy Misc | 0 | May 3rd 07 01:08 AM |
[sci.astro,sci.astro.seti] Contents (Astronomy Frequently Asked Questions) (0/9) | [email protected] | SETI | 0 | May 3rd 07 01:08 AM |
[sci.astro,sci.astro.seti] Contents (Astronomy Frequently Asked Questions) (0/9) | [email protected] | Astronomy Misc | 0 | April 12th 07 01:05 AM |
[sci.astro,sci.astro.seti] Contents (Astronomy Frequently Asked Questions) (0/9) | [email protected] | Astronomy Misc | 0 | May 3rd 06 12:33 PM |
[sci.astro,sci.astro.seti] Contents (Astronomy Frequently Asked Questions) (0/9) | [email protected] | SETI | 0 | May 3rd 06 12:33 PM |