A Chart from Guide 8 showing stars to appx mag 16.5
(http://homepage.ntlworld.com/paul_whitmarsh/Astronomy/Images/MX916/April_11_2004/VirgoMap_small.png)
Full size imagehttp://homepage.ntlworld.com/paul_whitmarsh/Astronomy/Images/MX916/April_11_2004/VirgoMap.png
(http://homepage.ntlworld.com/paul_whitmarsh/Astronomy/Images/MX916/April_11_2004/Virgo_Cluster_1a_small.png)
Now the image, 300mm at f2.8. three images eaxh 10 x 120seconds ha filter
Full size imagehttp://homepage.ntlworld.com/paul_whitmarsh/Astronomy/Images/MX916/April_11_2004/Virgo_Cluster_1a.png
Full size image processed by Greg, Thanks Greg :smile:http://homepage.ntlworld.com/paul_whitmarsh/Astronomy/Images/MX916/April_11_2004/VirgoMapgreg_a.jpg
[ This Message was edited by: Whitters on 2004-04-17 00:43 ]
(IMG tags changed to URL tags in interests of legibility.)
[ This Message was edited by: Rick on 2004-04-21 13:23 ]
[ This Message was edited by: Whitters on 2004-04-21 22:28 ]
Right that's it....... Your just showing off now !! Stop it !
All hail Paul king of fuzzies!!!!
God lord thats good. One question, last night the seeing was poor for planetary imaging, I thought about getting the SAC out and playing with it bacause I could see a lot of stars.
The question is (remember I'm a newbie) is that the difference between seeing as in the detail and transparency as in the amount you can see?
Chris,
As you have already worked out poor seeing, boiling atmousphere, means that you are unable to record fine detail. So no good for planetary or double star observing. Deep sky objects are usualy of a larger angular size (take up a larger amount of sky) and don't loose so much in poor seeing. Transparency is usualy affected by aerosoles in the air, which reflects the artificial light back to Earth, thereby making the whole sky brighter, and in some cases as bright or brighter than the object you want to observe, rendering it invisible. Less aerosole less back scatter, the artificial light is still there but radiating into space.
The amount of objects in these images is staggering. Paul the images you have been generating since having the secondary recoated are just awesome !!
Mike,
I have got into the 40's with the number of galaxies I have identified over the three images. This wasn't taken with the C8 but with the 300mm camera lens.
I havn't started with the C8 yet;-)
What !!??? My god !! I hate to imagine then !!
Objects identified so far. detail from NGC2000.0
Obj_Name RA Dec Magnitude Angular_Size Type_Desc Constellation_name
IC3303 12h 25.2m +12¢ª 43' 1.4' Galaxy Virgo
IC3432 12h 30.4m +14¢ª 10' 15 0.6' Galaxy Coma Berenices
IC3442 12h 31.3m +14¢ª 7' 1.5' Galaxy Coma Berenices
IC3457 12h 31.9m +12¢ª 39' 1.6' Galaxy Virgo
IC3475 12h 32.7m +12¢ª 46' 13.3 2.6' Galaxy Virgo
IC3476 12h 32.7m +14¢ª 3' 12.7 2.2' Galaxy Coma Berenices
IC3478 12h 32.7m +14¢ª 12' 1.3' Galaxy Coma Berenices
IC3486 12h 33.2m +12¢ª 52' ' Unidentified at the place given, or type unknown Virgo
IC3492 12h 33.2m +12¢ª 51' 15 ' Galaxy Virgo
IC3583 12h 36.7m +13¢ª 15' 14 2.2' Galaxy Virgo
M84 12h 25.1m +12¢ª 53' 9.1 5' Lenticular (S0) Galaxy Virgo
M86 12h 26.2m +12¢ª 57' 8.9 7.5x5.5' Lenticular (S0) Galaxy Virgo
M87 12h 30.8m +12¢ª 24' 8.6 7' Elliptical Galaxy Virgo
M88 12h 32m +14¢ª 25' 9.6 7x4' Spiral Galaxy Coma Berenices
M89 12h 35.7m +12¢ª 33' 9.8 4' Elliptical Galaxy Virgo
M90 12h 36.8m +13¢ª 10' 9.5 9.5x4.5' Spiral Galaxy Virgo
M91 12h 35.4m +14¢ª 30' 10.2 5.4x4.4' Spiral Galaxy Coma Berenices
NGC4387 12h 25.7m +12¢ª 49' 12 1.9' Galaxy Virgo
NGC4388 12h 25.8m +12¢ª 40' 11.1 5.1' Galaxy Virgo
NGC4402 12h 26.1m +13¢ª 7' 11.7 4.1' Galaxy Virgo
NGC4407 12h 26.3m +12¢ª 39' ' Object called nonexistent in the RNGC (Sulentic and Tifft 1973) Virgo
NGC4425 12h 27.2m +12¢ª 44' 11.9 3.4' Galaxy Virgo
NGC4431 12h 27.5m +12¢ª 18' 12.8 2' Galaxy Virgo
NGC4435 12h 27.7m +13¢ª 5' 10.9 3' Galaxy Virgo
NGC4436 12h 27.7m +12¢ª 19' 13.1 1.9' Galaxy Virgo
NGC4438 12h 27.8m +13¢ª 1' 10.1 9.3' Galaxy Virgo
NGC4440 12h 27.9m +12¢ª 18' 11.8 2' Galaxy Virgo
NGC4458 12h 29m +13¢ª 15' 12.1 1.9' Galaxy Virgo
NGC4461 12h 29m +13¢ª 11' 11.2 3.7' Galaxy Virgo
NGC4473 12h 29.8m +13¢ª 26' 10.2 4.5' Galaxy Coma Berenices
NGC4476 12h 30m +12¢ª 21' 12.3 1.9' Galaxy Virgo
NGC4477 12h 30m +13¢ª 38' 10.4 4' Galaxy Coma Berenices
NGC4478 12h 30.3m +12¢ª 20' 11.2 2' Galaxy Virgo
NGC4479 12h 30.3m +13¢ª 35' 12.5 1.8' Galaxy Coma Berenices
NGC4486A 12h 30.8m +12¢ª 16' 8.6 7.2' Galaxy Virgo
NGC4486B 12h 30.8m +12¢ª 29' 8.6 7.2' Galaxy Virgo
NGC4506 12h 32.2m +13¢ª 25' 14 1.6' Galaxy Coma Berenices
NGC4516 12h 33.1m +14¢ª 34' 14 1.9' Galaxy Coma Berenices
NGC4531 12h 34.3m +13¢ª 5' 13 3' Galaxy Virgo
NGC4550 12h 35.5m +12¢ª 13' 11.6 3.5' Galaxy Virgo
NGC4551 12h 35.6m +12¢ª 16' 11.9 2' Galaxy Virgo
NGC4571 12h 36.9m +14¢ª 13' 11.3 3.8' Galaxy Coma Berenices