Help to ID a possible SN

[Escortitis]

Hello All,

On Friday the 31st Aug in Perth i was testing some mods to a web-cam on a 80mm sky-watcher. The image was not taken seriously, i was more concerned about RF interference during long exposure. Any way, i stacked the images (31 fr/ 15sec) and have now got an 'artifact' that i cant identify. In the image, it appears as what i would expect a planetary nebula to look like, but i cant find it on any sky maps including google sky. The cluster is M7, and the object is NNW of the cluster center. Dec -34 deg 20 mins 28.00 sec / RA 17 hrs 54 mins 10.98 sec. I'm sorry the image is crap, the mount I'm using currently is crap (please hurry Mr Lovell) not to mention bad camera collimation and over exposure( the attached picture has been abused with editing, might put the plain stacked one on too). My astronomy / astrophotography experience is limited to about a year so I'll give this to you guys to throw around and will be very interested to hear what you guys think. I can only think that if it was aberration like the brighter stars, how come the other stars of that magnitude don't appear the same? Don't know.

Great to have somewhere to drop stuff like this.
Cheers,
George

[h0ughy (David)]

can you point out the spot your talking about in the image?

[astroron (Ron)]

There is a P/N at RA 17:53:31 Dec -34:38;43 given on the Sky planetarium program as PLN 355.4.2

[astroron (Ron)]

See the image in this thread to see if you can see anything http://www.iceinspace.com.au/forum/s...ewpost&t=23562

[Escortitis]

Yeah, i can see that on Cartes du Ciel, which is the sky map program running here. I updated the PN data base and have two in that location(very close) but when I've aligned the map with the image it's further away from HR6668 (my bright reference), and 'below' PK 356-4.1 by quite a bit. Below is info for the logged PN PK356-4.1, and i got my RA/DEC off google sky which i could align with my image. Still i'm lost.

Planetary Nebula
PK 356- 4.1 Canon 2-1
Constellation: Scorpius
Dimension: 0.1'x 0.0'
Magnitude: 12.20
Surface Brightness: 4.99
Description: 13''-pB,vS,lE,central * seen at 220X
On north side of M7 star cluster

J2000 RA: 17h54m36.00s DE:-34°23'00.0"
Date RA: 17h55m06.61s DE:-34°23'03.5"

perth 2007-9-4 15h47m ( TU + 8h00m )
Sideral Time : 14h24m
Hour Angle : 20h29m
Azimuth :+108°43'
Altitude :+46°02'

Rise : 11h38m Azimuth:+131°52'
Culmination : 19h20m
Set : 3h02m Azimuth:+228°08'
Distance to the last object : +00°05'18.2" PA:20

Thanks heaps for your input, cheers.
George