Go Back   IceInSpace > General Astronomy > Observational and Visual Astronomy > Observation Reports

Thread Tools Rate Thread
Old 31-03-2010, 01:29 PM
astrospotter (Mark)
Registered User

astrospotter is offline
Join Date: Jan 2010
Location: San Jose, CA, USA
Posts: 146
Observation Report - 15 March, 2010 - LMC part 1

March 15th followed a night where I was skunked so not being sure what was to come I decided to follow my plan observing key targets in the LMC identified beforehand on a 2-sheet big DSS printout I had on my music stand. Only a few sizes are listed as this was sort of a 'Brisk Walk through the LMC' I would follow up with a focus on certain interesting areas 2 nights later. So much to see ... so little time with El Nino and uncertain nights ahead.

This was all transcribed a few days ago and I must admit in some places I was a bit confusing even to myself now but I think I got the bulk of what I said on the tape faithfully even if I was wrong at the time. It's all here as stated on the recording.

Observation Report - 15 March, 2010 - LMC part 1 (did not fit in 1 post)
Arkaroola Mon 15Mar10 Observations from 9:30pm till 12:00am. 21.7+ Mag/ArcSec2

Observers: Mark Johnston, solo trip.
Arkaroola Location: 139 20 East, 30 18 South
The 14th was all clouds. Clear all this night but observatory in use till 9:30

Southern sky never seen objects with this night the my first real good but general LMC run.
For the LMC objects I did not take super detailed descriptions on the most part but kept to general brief observations because LMC is just frankly a lifetime project so I wanted a broad overview more than clinical detail. On 3-17-2010 a few nights later I went back to focus on a few areas I had felt were nice and had detailed DSS printouts of for a closer look.

Date: 3/15/2010 Site: Arkaroola Scope: 12DobF5 Obs: 84
NELM: 6.8 see: 5 trans: 5 sqm: 21.74

Scope: 14SctF7
con: Hor lst: SSAL,C87
NGC 1261
Glob 8.3 6.8' 13.5 16.8 --- --- BAA 03 12 15.3 -55 13 01
8:53pm 7mmNag 360x 3' apparent dia Low concentration. Slightly NS look to it. Averted shows shugary look, low concentration to edges. FStar ENE by 5 min. Some jutting out to Northern side with almost-resolving star spikes. PostNote: It is larger but as usual if you cannot pick out the outter stars I tend to get much smaller 'apparent size' than per the book.

Scope: 12DobF5
Moved to 12" BinTel Dob after collimating it. Time for LMC

con: Dor cmt: LMC_TarantulaNebula: fav: F5
NGC 2069
BrtN 18.0x11.0' E UNK 05 38 30.0 -69 07 00
9mmNag 9:40pm Lumicon O3 filter. Wide-mouthed deamon head with ear to the left goes up and is defined. Nostrel to the right is the bright center of a large clump of field stars [PostNote: must be 2070], perhaps core stars of 2070. Bridging to right then small dark area, nebulous vertical land then broad dark area as big as head, then wispy.
Below the chin there are dark round areas below and to right of chin and two dark areas below and to left of the chin. so 3 across. Now to below chin is dark area then to right is another dark circle to the right. Nebulous area below the dark circle below right of chin has bright nebulous lower (E) boundry with dark area farther E and faint nebulous far E boundry to this dark area.
The goblin's big ear goes out to the left then turns up, W, before it splits to 2 prongs and the whole ear as tall as the head. Moving north of the ear is a dark channel parallel to the ear then light again. Then above the head is a bit of a hump in nebuloscity with another dark area above the eye to the right and nebuloscity extending up twice the height of the head.
There is a separate area of nebuloscity around a fair sized grouping of stars that is distinct and round and as big as the large mouth of the goblin. The round nebulous to the south-west is distinct enough to be an object [PostNote: must be Ngc2060].

con: Dor cmt: LMC:
NGC 2081
C+N 5.0' E NGC 05 40 05.3 -69 24 06
10:15pm 9mmNag 170x 5-6 resolvable stars. Averted vision required to see the loop around the cluster area. There is a noticable knot in nebuloscity on the south side of the ring of nebulous area.

NGC 2074
Open 1.0' --- --- BAA 05 39 02.7 -69 29 41
10:17pm 9mmNag 170x Much brighter than 2081 nebulus region. Bright half circle starts on NW, loops around the north still bright then continues looping around East, still bright, then dims as it thins out in the loop back CCW down to the south side.

NGC 2080
Open 0.7' --- --- BAA 05 39 44.6 -69 38 42
10:17pm 9mmNag 170x Very bright and concentrated nebula. Thins and 2077 is dimmer to SSW

NGC 2077
Open 0.6' --- --- BAA 05 39 34.9 -69 39 19
10:20pm 9mmNag 170x Dimmer than its neighbor of 2080 but seems separate with darkness between the 2. Just below 2077 there seem to be 2 even dimmer and smaller nebulous areas before the dark gap that will separate this from 2079/2083 area. To the west is FS with nebuloscity to its west then

NGC 2085
Open 0.4' --- --- BAA 05 40 09.2 -69 40 21
10:22pm 9mmNag 170x Noticed as dimmer than 2080 as a field star with nebuloscity to WSW

NGC 2086
C+N 0.3' NGC 05 40 12.3 -69 40 04
10:25pm 9mmNag 170x Noteced just to east as fuzzy area just to east of 2085

NGC 2083 NGC 2084
C+N 3.5x 2.5' NGC 05 39 58.8 -69 44 56
10:25pm 9mmNag 170x This area appears as 3 nebulous areas. 2083 is second brightest and to the East. I describe a third object as between brighter 2079 and 2nd tier 2083 but I think it is part of 2083. [PostNote: Bright part of 2083 is denser star area to NE of this group]

NGC 2079
C+N 0.8' E NGC 05 39 40.2 -69 46 25
10:30pm 9mmNag 170x Brightest of 3 nebulous areas in 2083 group. Smaller than area to East but brightest surface brightness.

NGC 2078
C+N 0.4' E NGC 05 39 40.1 -69 44 36
10:30pm 9mmNag 170x I noticed this as a tiny, dim NW corner of a 'box' but dim compared to other corners.

Mystery_Object 16' E of 2083
10:34pm 9mmNag 170x A definite nebulous round area which is half way to 2013 which I did not note in my tape but does show up on DSS so I circle it on my chart. Not on Uranometria either.

con: Dor cmt: LMC_TheGrapes: Tape: 14min

NGC 2058
Open 12.0 1.0x 1.0' --- 16.0 I r NGC 05 36 54.3 -70 09 48
10:35pm 9mmNag 170x One of two dominant clusters of this group. Larger and very obvious but no resolved stars.

NGC 2059
Open 12.9 0.4x 0.4' --- --- NGC 05 37 00.9 -70 07 40
10:35pm 9mmNag 170x A medium dim and tiny cluster just N of 2058.

NGC 2066
Open 13.1 0.5x 0.5' --- --- NGC 05 37 42.4 -70 09 58
10:36pm 9mmNag 170x Very very tiny, dim and East of 2058.

NGC 2065
Open 11.0 1.5x 1.5' --- 16.0 I r NGC 05 37 36.5 -70 14 09
10:36pm 9mmNag 170x One of two dominant clusters of this group. Larger and very obvious but no resolved stars. This pattern above is like a staircase with this is bottom floor.

NGC 2072
Open 13.2 0.4x 0.4' --- --- NGC 05 38 23.9 -70 13 59
10:37pm 9mmNag 170x Very tiny, dim grape directly East of 2065 dominant member.

NGC 2057
Open 12.2 0.5x 0.5' --- --- NGC 05 36 56.2 -70 16 12
10:37pm 9mmNag 170x Tiny cluster directly south from 2058 2.5 'step' units.

Mystery_Object Possible object on East point of an EQ triangle formed with 2047 adn 2046 as other verticies. This seems like it may be an object but may be asterysm?

NGC 2046
Open 12.6 0.7x 0.7' --- --- NGC 05 35 38.4 -70 14 26
10:37pm 9mmNag 170x tiny tier2 grape SSW of 2047 on the SW side of the group of 'grapes'

NGC 2047
Open 13.2 0.5x 0.5' --- --- NGC 05 35 54.6 -70 11 32
10:37pm 9mmNag 170x tiny tier2 grape NNE of 2046 on the SW side of the group of 'grapes'

con: Dor cmt: LMC_SE:

NGC 2019 SL 554
Glob 10.9 1.0' --- --- --- --- BAA 05 31 56.7 -70 09 35
10:38pm 9mmNag 170x Easily noticed, no resolved stars noted.

10:38pm 7mmNag 220x Possible tiny object 5' SW of 2019 [PostNote: MegaStar mag 12.5 star & LMC picture 1 shows this as possible star with nebuloscity.]

10:38pm 7mmNag 220x Possible tiny object 5' NNW of 2019 [PostNote: MegaStar mag 13.5 star & LMC picture 1 shows this as possible star with nebuloscity.]

NGC 2018
BrtN 2.0x 1.5' E SKY 05 31 18.5 -71 04 06
10:42pm 9mmNag 170x NPB filter. Bright distinct stars in most nebulous region. Nebuloscity off to the west is very faint. 2'W/1'N a much smaller faint but appearing a bit separate from main nebulous region. 9' East and a bit N is distinct separate sort of smaller nebulous area that does not appear stellar. Also 4' WSW of main area is knot in nebuloscity.

HenizeN 206B
BrtN 1.2x 0.3' MAC 05 30 48.1 -71 08 03
10:44pm 9mmNag 170x NPB filter. Distinct 1' len mostly EW elongated 1x bright nebulous bar.

10:44pm 9mmNag 170x Obvious possible cluster object 15' S and about 5' E of 2018. [PostNote: DSS shows it very well]

con: Dor cmt: LMC_NearTarNeb: Tape: 21min

NGC 2100
Open 9.6 2.0' --- 11.8 II r NGC 05 42 08.2 -69 12 42
10:45pm 16mmNag 95x Fairly large and bright cluster due East of Tarantula Nebula.

NGC 2055
Open 0.6' --- --- BAA 05 36 41.8 -69 29 49
10:46pm 16mmNag 95x In amoung a gorgous 16' length star cloud just SSW of Tarantula Nebula. Cloud is Very apparent from background and a fairly even blanket of stars.

NGC 2050
Open 1.0' --- --- BAA 05 36 40.0 -69 22 49
10:46pm 16mmNag 95x Within a gorgous 16' length star cloud just SSW of Tarantula Nebula.

NGC 2048
BrtN 18.0' SKY 05 35 04.1 -69 42 37
10:47pm 16mmNag 95x Noted as nebulous area farther south from large star cloud that is just below Tarantula nebula.

Funny: Got a bit lost looking for Globular Ngc2005 and said 'Cripes theres objects like everywhere' LOL

Continues on part 2 ... hope that fits.
Reply With Quote


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT +10. The time is now 12:30 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
OzScopes Authorised Dealer
SkyWatcher Australia
Meade Australia
Lunatico Astronomical
Celestron Australia
NexDome Observatories
Astronomy and Electronics Centre