Astronomical League
Planetary Nebula Program Images

Progress: 4/09/2016, 23/90

Latest Image: M97 (Owl)

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This page will eventually be submitted to the Minnesota Astronomical Society Astronomical League Awards Coordinator in fulfillment of the Planetary Nebula Observing Program (imaging option).

Click on the links in the table's rightmost column to view the images.
Click on the column head links for explanations of the notations used.

Listed below are the objects that were imaged, presented in order of right ascension as on the AL list.

Object Name*
Alternate Names
Date**
Time
Location
Trans., Seeing
Sky Darkness
Imaging
Telescope
Imaging
Device

Calibration
Exposures
Software
Link to
Image
NGC 40
Bow-Tie Nebula
9/27/15
0053-0314
StarHome
F, P
Full Moon,
thin ground fog
C925 ST-8300M
D, B
L: 18 x 180s
R: 13 x 90s B2
G: 15 x 90s B2
B: 13 x 90s B2
IPC, PHD, IP, PS
Image
NGC 246
Skull
11/7/15
1934-2302
Cherry Grove
F, P
C925FR ST-8300M
D
R: 20 x 180s
G: 20 x 180s
B: 23 x 180s
IPC, PHD, IP, PS
Image
NGC 650
M76
Little Dumbbell
9/22-23/14
2138-0423
Burnsville
G, G
C925 ST-8300M
D
Ha: 38 x 300s, B2
O3: 33 x 300s, B2
IPC, PHD, IP, PS
Image
NGC 1514
Crystal Ball
10/17-18/2015
2223-0228
StarHome
G, G
C925 ST-8300M
D,B
R: 14 x 300s
G: 16 x 300s
B: 15 x 300s
IPC, PHD, IP, PS
Image
NGC 3587
M97
Owl
4/9/2016
0220-0251
Cherry Grove,
E, VG
TV102 T2i
D
10 x 180s
PHD, IP, PS
Image
NGC 6720
M 57
Ring
8/3/15
2202-2353
Burnsville
VG, G
C925 ST-8300M
D, F, FD
Ha: 6 x 600, B2
O3: 6 x 600, B2
IPC, PHD, IP, PS
Image
IC 1295 8/2-3/15
2217-0039
Burnsville
VG, G
TV-102FR ST-8300M
D, F, FD
Ha: 9 x 600s
O3: 6 x 600s
IPC, PHD, IP, PS
Image
Sh 2-71 7/31-8/1/15
2208-0010
Burnsville
G, F
TV-102FR ST-8300M
D, F, FD
Ha: 6 x 600s
IPC, PHD, IP, PS
Image
NGC 6781
Snowglobe
6/28-29/12
2245-0110
Burnsville
G, G
C925
ST-8300M
D
Ha: 25 x 180s
O3: 20 x 180s
IPC, PHD, IP, PS
Image
NGC 6804 8/11-12/15
2326-0005
StarHome
F, G
very light fog
C925FR ST-8300M
D, B
R: 15 x 60s B2
G: 10 x 60s B2
B: 10 x 60s B2
IPC, PHD, IP, PS
Image
BD+30 3639
Campbell's
Hydrogen
Star
10/10/2015
2022-2151
Cherry Grove
F to P, P
Gusty Winds
C925FR ST-8300M
D,B,F,FD
R: 6 x 300s
G: 6 x 300s
B: 6 x 300s
IPC, PHD, IP, PS
Image
NGC 6853
M27
Dumbbell
6/25-26/13
2300-0106
Burnsville
G, G
C925 ST-8300M
D
Ha: 18 x 180s
O3: 19 x 180s
IPC, PHD, IP, PS
Image
NGC 6894 8/11/15
2224-2257
StarHome
F, G
very light fog
C925FR ST-8300M
D, B
R: 10 x 60s B2
G: 10 x 60s B2
B: 10 x 60s B2
IPC, PHD, IP, PS
Image
NGC 7008
PK 093+5.2
Fetus
8/25-26/15
2154-0115
Burnsville
G, G
C925FR ST-8300M
D, B
Ha: 20 x 300s, B2
O3: 20 x 300s, B2
IPC, PHD, IP, PS
Image
NGC 7026
Cheeseburger
10/10/2015
2217-2346
Cherry Grove
F to P, P
Gusty Winds
C925FR ST-8300M
D,B,F,FD
R: 6 x 300s
G: 6 x 300s
B: 6 x 300s
IPC, PHD, IP, PS
Image
Sh 1-89
Moth
10/2-3/15
2024-0055
Burnsville
G, G
C925 ST-8300M
D,B,F,FD
R: 28 x 180s B2
G: 29 x 180s B2
B: 24 x 180s B2
IPC, PHD, IP, PS
Image
NGC 7048
Hubble 9
9/29/15
2103-2330
Burnsville
G, G
C925 ST-8300M
D, B
Ha: 6 x 600s, B2
O3: 5 x 600s, B2
IPC, PHD, IP, PS
Image
Pease 1 10/17/2015
2039-2202
StarHome
G, G
C925 ST-8300M
D,B
R: 24 x 60s
G: 24 x 60s
B: 21 x 60s
IPC, PHD, IP, PS
Image
NGC 7094
K 1-19
8/4/15
0108-0159
Burnsville
VG, G
C925 ST-8300M
D, F, FD
O3: 6 x 600s
IPC, PHS, IP, PS
Image
NGC 7293
Helix
Caldwell 63
10/14-15/15
2243-0058
Cherry Grove
F, G
TV-102FR ST-8300M
D, F, FD
R: 6 x 300s B2
G: 6 x 300s B2
B: 6 x 300s B2
IPC, PHD, IP, PS
Image
NGC 7662
Blue Snowball
10/1-2/15
2134-0009
Burnsville
G, G
C925 ST-8300M
D, B
R: 46 x 60s B2
G: 46 x 60s B2
B: 47 x 60s B2
IPC, PHD, IP, PS
Image
Jones 1
PN G104.2-29
PK 104-29.1
ARO 195
8/20-21/15
2227-0215
StarHome
Good, Good
C925FR ST-8300M
D, B
R: 7 x 300s B2
G: 7 x 300s B2
B: 7 x 300s B2
IPC, PHD, IP, PS
Image
Abell 82
8/11/15
0321-0406
StarHome
F, G
very light fog
C925FR ST-8300M
D, B
L: 10 x 60s B2
R: 10 x 60s B2
G: 10 x 60s B2
B: 10 x 60s B2
IPC, PHD, IP, PS
Image

Notes:
*Object and alternate names are those provided by the Astronomical League
**All dates and times are local Central Time Zone. Starting times of the first and final exposures are indicated.

General Notes:
All objects were located by star-hopping.
Images may be cropped or rescaled.
All images on this web site are copyright © David Venne.

 

Object Entry Keys



Locations
Name
Typical Sky
Darkness*
Lat
Lon
Alt(m)
Burnsville
B7
44°47'30"N
93°13'53"W
293
Cherry Grove Observatory
B3
44°11'49"N
92°51'44"W
357
Eagle Lake Observatory
B4
44°48'37"N
93°56'23"W
305
Iowa Star Party
B2
41°48'30"N
94°39' 4"W
385
Jeffers Petroglyphs
B2
44°05'23"N
95°03'28"W
387
Long Lake Conservation Center B2
46°38'49"N
93°27'54"W
389
Nebraska Star Party B1 42°36'18"N 100°55'49"W 945
StarHome Observatory
B4
45°23'8"N
93°0'13"W
278
Wisconsin Observers Weekend
B4
44°19'21"N
89°13'36"W
317

*See Sky Darkness explanation


Tranparency and Seeing

E: Dark frames, VG: Flat Frames, G: Flat Dark frames, F: Bias Frames, P: Poor


Sky Darkness

Sky darkness is indicated using the Bortle scale:

B1: Excellent dark-sky site
B2: Typical truly dark site
B3: Rural sky
B4: Rural/suburban transition
B5: Suburban sky
B6: Bright suburban sky
B7: Suburban/urban transition
B8: City sky
B9: Inner-city sky

If the sky darkness code is not given, the location's corresponding code given in the Locations Key applies.

Most of my images come from an inner suburb of a major metropolitan area (population about 2.5 million). Sky brightness varies strongly with direction here. The darkest portions of sky are overhead and may qualify as a B7 on the Bortle scale when nothing is present to diminish transparency; the northern half of my sky and the low southern sky are typically a B8.


Imaging Telescopes
Telescope
FL
mm
Field width
arcmin
Field height
arcmin
Image Scale*
arcseconds/pixel
TV102
@ f8.6
876
87 (70)
58 (53)
1.01 (1.27)
TV102FR
f/6.9 using Tele Vue FF/FR
700
109 (88)
72 (66)
1.26 (1.58)
C925
@ f/10
2350
32 (26)
22 (20)
0.38 (0.47)
C925FR
f/6.3 using Celestron FF/FR
1480
51 (42)
34 (31)
0.60 (0.75)
Field widths and heights are For the Canon T2i with SBIG ST-8300M values in parentheses. Cropped images correspond to smaller dimensions than these

Imaging Device

Canon T2i
Gary Honis Baader modified, resolution 5184 x 3456, pixel size 4.3 microns, sensor size 22.3 x 14.9 mm
ST-8300M
monochrome CCD, unbinned resolution 3326 x 2504px, pixel size 5.4 microns, sensor size 18 x 13.5mm


Calibration

D: Dark frames, F: Flat Frames, FD: Flat Dark frames, B: Bias Frames


Exposures

Filters used with ST-8300M
L, R, G, B
: Baader 36mm radius
Ha Baader H-alpha (7nm), S2 (8nm), and O3 (8.5nm), all with 36mm radius
The filters are all housed in the SBIG FW8.
The ST-8300M also can image in binned mode. Binned modes are indicated by
B2 (binned 2x2) or B3 (binned 3x3).


Software
Item Description and notes
IPC ImagesPlus Camera Control
PHD PHD autoguiding. When this appears it also indicates the mount was autoguided using the Orion MiniGuider telescope and Orion StarShoot guider.
IP ImagesPlus image processing software
PS PhotoShop (includes Astronomy Tools and Annie's Astro Actions)