The table below suggests there are 19 reasonably accessible objects to be had between now and September. Thanks to using short focal lengths they can be all be captured in 13 images. The two camera lenses will acount for nine objects in five images, with the remainder split between the AT65 and TV102.
If I finish or be close to it by mid-July I'll be free to use a possible trip to the Nebraska Star Party for creating pretty LRGB images instead of going after one of the faint ALBNs.
April (4 / 91)
|
||
Object | LBN brightness |
Imager |
---|---|---|
LBN 1088
|
5
|
200mm
|
LBN 1089
LBN 1090
|
5
5
|
135mm
|
Sh 2-210
|
5
|
TV102
|
May-June (9 / 100)
|
||
Object | LBN brightness |
Imager |
LBN 11
LBN 10 LBN 8 LBN 1122 |
5
6 6 4 |
135mm
|
Sh 2-13
Sh 2-12
|
4?
4
|
200mm
|
NGC 6357
|
4?
|
AT65 or TV102
|
LBN 20
LBN 22
|
4
5
|
TV102 or AT65
|
June-July (5 / 105)
|
||
Object | LBN brightness |
Imager |
LBN 70
|
6
|
200mm
|
IC 4701
LBN 52
|
4
2
|
AT65
|
IC 4812
NGC 6729
|
?
?
|
AT65
|
August-September (2 / 107)
|
||
Object | LBN brightness |
Imager |
LBN 140
|
6
|
AT65
|
LBN 434
|
6
|
AT65
|
We've finally gotten some snow and the ground is again white. This means that Cherry Grove is not really suitable for use for a while. The snow needs to melt and the field needs some time to dry; it will probably be ready again around Easter. Until then I'll be working from my back yard and will be limited to narrowband.
Tonight is forecast to be clear, so I'll be able to test the 200mm at long last.
If you have the feeling I want to be done with the ALBN, you are correct.
EDIT: Looking for a backyard target on 3/29 I discovered that SkyTools3 has incorrect coordinates for LBN 10. This object is actually part of the LBN 8/11/1122 area. All four objects are a slightly better fit in the 135mm field oriented N-S, so I've changed the table to show this. I'm going to check the coordinates of all the table's objects against the SIMBAD database.
No comments:
Post a Comment