Difference: LogBookAstronomyEntry0145 (1 vs. 4)

Revision 401 Apr 2017 - LaurieNevay

Line: 1 to 1
 
META TOPICPARENT name="LogBookAstronomyEntryAUTOINC0001"

Nebulas

Line: 59 to 59
  astrometry_markarians_chain.jpg
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  • Tracking stopped working and clouds rolling in around 1:30.
  • Took single dark at 500s for a simple auto dark later at -20C
  • Taking flats.
 -- LaurieNevay - 31 Mar 2017

Revision 301 Apr 2017 - LaurieNevay

Line: 1 to 1
 
META TOPICPARENT name="LogBookAstronomyEntryAUTOINC0001"

Nebulas

Line: 12 to 12
 
  • Start up around 19:00
  • Dome open straight away to cool down and cooler can reach -20C
  • Aligned easily to Sirius to the south.
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Observation

 
  • Flaming Star Nebula the target as quite high and slightly to the west (ie away from London).
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  • RA 5h14m40s; Dec +34o28'25"
 
  • 1 min exposure without filter to get some stars despite blueish sky.
  • Uploaded to astrometry.net to check location vs stellarium location.
  • http://nova.astrometry.net/user_images/1564397#annotated
  • Slightly off it would seem. Took 400s second exposure in mean time with H Alpha filter to see if we see anything.
  • Indeed, slightly off.
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flamin_star_400s_h_alpha.jpg

 
  • Ah, forgot to turn on tracking!
  • Centred where nebula should be (without filter - so just stars) and started tracking.
  • Checking with astrometry again before long data taking.
Line: 25 to 34
 
  • Bang on target - 20:58
  • 20 minute image was good, but we need better - limited by read out noise
  • 2x 30 minute exposures so far at 22:37
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flaming_1800s-002.jpg
 
  • LIght without filter for star field.
  • 60s had some stars, but 180s was better. Need to take several for star field.
  • Quick to take now and will use as trial of false colouring later. Record 5x 180s in total.
  • Then back to 30min h alpha exposures.
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  • Midnight and on 5th 30 minute exposure
  • Finished Flaming Star Nebula around 00:30 as it was getting very low and cloud is rolling in from the west.
 
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  • Took a few of jupiter - wide field and main scope - using h alpha and blue filter respectively as pretty bright.
  • Moved up a wee bit to Markarian's chain - let's see if we can get some galaxies!
  • This site is really suited for a deep sky galaxy zoo image - however, this means there are no bright stars to guide on
  • I think I may be guiding on a galaxy, but it's something.
  • Tried 180,300,600 but settled on 500s as a few things saturating.
  • guiding ok despite dim image.
  • http://nova.astrometry.net/user_images/1564894#annotated
  • Astrometry lists around 22 galaxies in this image!
 
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astrometry_markarians_chain.jpg
 

-- LaurieNevay - 31 Mar 2017

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META FILEATTACHMENT attachment="flamin_star_400s_h_alpha.jpg" attr="" comment="" date="1491001360" name="flamin_star_400s_h_alpha.jpg" path="flamin_star_400s_h_alpha.jpg" size="6307239" user="uxap005" version="1"
META FILEATTACHMENT attachment="flaming_1800s-002.jpg" attr="" comment="" date="1491001386" name="flaming_1800s-002.jpg" path="flaming_1800s-002.jpg" size="8855015" user="uxap005" version="1"
META FILEATTACHMENT attachment="astrometry_markarians_chain.jpg" attr="" comment="" date="1491006828" name="astrometry_markarians_chain.jpg" path="astrometry_markarians_chain.jpg" size="1143823" user="uxap005" version="1"

Revision 231 Mar 2017 - LaurieNevay

Line: 1 to 1
 
META TOPICPARENT name="LogBookAstronomyEntryAUTOINC0001"

Nebulas

Line: 23 to 23
 
Added:
>
>
  • 20 minute image was good, but we need better - limited by read out noise
  • 2x 30 minute exposures so far at 22:37
  • LIght without filter for star field.
  • 60s had some stars, but 180s was better. Need to take several for star field.
  • Quick to take now and will use as trial of false colouring later. Record 5x 180s in total.
  • Then back to 30min h alpha exposures.
 

Revision 131 Mar 2017 - LaurieNevay

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="LogBookAstronomyEntryAUTOINC0001"

Nebulas

  • LN

Setup

  • Extremely clear, no wind.
  • Coolers on from lunch time for darks.
  • Could only get to -15C during the day (60 - 80% cooler power)
  • Start up around 19:00
  • Dome open straight away to cool down and cooler can reach -20C
  • Aligned easily to Sirius to the south.
  • Flaming Star Nebula the target as quite high and slightly to the west (ie away from London).
  • 1 min exposure without filter to get some stars despite blueish sky.
  • Uploaded to astrometry.net to check location vs stellarium location.
  • http://nova.astrometry.net/user_images/1564397#annotated
  • Slightly off it would seem. Took 400s second exposure in mean time with H Alpha filter to see if we see anything.
  • Indeed, slightly off.
  • Ah, forgot to turn on tracking!
  • Centred where nebula should be (without filter - so just stars) and started tracking.
  • Checking with astrometry again before long data taking.
  • http://nova.astrometry.net/user_images/1564483#annotated
  • Bang on target - 20:58

-- LaurieNevay - 31 Mar 2017

 
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