Hemisphere:  Southern  ·  Constellation: Tucana (Tuc)  ·  Contains:  Extremely wide field
Getting plate-solving status, please wait...
SMC Mosiac Panels 1 - 6, 


            Rodney Watters

SMC Mosiac Panels 1 - 6

Getting plate-solving status, please wait...
SMC Mosiac Panels 1 - 6, 


            Rodney Watters

SMC Mosiac Panels 1 - 6

Technical card

Imaging telescopes or lenses: Tak TSA120

Imaging cameras: QSI 683 ws-8

Mounts: EQ8

Guiding telescopes or lenses: Tak TSA120

Guiding cameras: Starlight Xpress Lodestar x2

Focal reducers: Takahashi TOA Reducer .75x

Software: Pixinsight 1.8  ·  Sequence Generator Pro

Filters: Astronomik Ha 1.25" 6nm  ·  Astronomik Red  ·  Green  ·  Blue

Integration: 0

Astrometry.net job: 3380335

RA center: 1h 3' 36"

DEC center: -73° 1' 44"

Pixel scale: 1.645 arcsec/pixel

Orientation: 87.259 degrees

Field radius: 2.081 degrees

Resolution: 8244x3884

Locations: Glanmire Home Observatory, Bathurst, NSW, Australia

Data source: Backyard


I'm now more than half way through this rather large project to complete a mosaic of the Small Magellanic Cloud with my Tak TSA120 and QSI CCD camera. I have set myself a target of 12 panels that will capture most of the SMC without including the nearby globular clusters of NGC 104 and NGC 362. Each panel is comprised of data captured through four filters, Ha, R, G & B. RGB subs are 5 minutes each and the Ha is 20 minutes per sub. All up the project will make for some large numbers. My target is to capture at least 30 good subs for each of the RGB filters and at least 20 subs for the Ha.

For the six panels that I have included in this image, there are a total of 650 subs for an integration time of over 84 hours (not counting the bad subs that have been thrown in the bit bucket!). The file sizes for the 650 subs add up to 10.8 Giga Bytes of data. The field of view for each frame is approximately 1.5 degrees by 1.0 degrees and I allowed a 20% overlap between each frame during data capture.

This project started in 2017 with the capture of the first batch of data and at this stage it is looking like it will be the end of the 2020 calendar year before I can finish the data capture (date of posting this update is February 2020). There are ten completed panels worth of data in the can so far and due to bush fire smoke, dust storms, clouds and now rain it has not been possible to capture any data since October 2019 - nearly four months ago. By the time that the SMC swings back around to a reasonable height again it is going to be September/October.

Data acquisition software is SGP Pro and processing has been completed entirely using Pixinsight 1.8.8-4. Mosaic construction in PI made use of the Mosaic by Coordinates and Gradient Merge Mosaic tools.

I have provided a link to a copy of the image on the Giga Pan site which is good for viewing very high resolution images. It is best viewed on a 21" screen or above and use the Giga Pan full screen mode to zoom in close. Once in full screen mode you can use the scroll button on the mouse to zoom in and out.

Now that panels 1 - 6 are complete I will start work on the next three panels to integrate them into the mosiac.

Clear skies,



Sky plot

Sky plot


SMC Mosiac Panels 1 - 6, 


            Rodney Watters

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Deep Sky Mosaics