Saturn in RAW mode
Name
Mark and Nigel Stronge
Location
  Comber, County Down, Northern Ireland
Photo Title
  Saturn in RAW mode
Time and Date taken
  8th March 2004 2230UT
Equipment used
  Meade LX200 Classic 10" SCT, Meade 2inch diagonal, vibration isolation pads
Capturing device used
  Philips TouCam Pro in RAW mode
Technical details
  10fps, 1/25 sec exposure

On 8th March, ourselves (Mark and Nigel Stronge) and John McConnell, EAAS Chairman, setup 3 telescopes and started an evening's viewing and imaging. We had a Meade ETX90 Maksutov, an Orion ED 80mm APO refractor and the Meade LX200 10inch SCT all pointing skywards.

The high pressure and high humidity were causing a mist and haze to form but at the start of the evening the sky was beautifully deep for suburbia, around Mag5. By the end of the evening, after the Moon rose, the haze was much worse and this brought seeing conditions down to possibly Mag3.5 ???

Our first target of the night was Saturn. We recorded 1000 frames of which Registax selected 690 frames to align and stack. We then processed the image using Linear Wavelet processing which seems to give a greater degree of control for bringing out large and small features on planets. We captured at 10fps, RAW mode, with the gamma set to zero and saturation at maximum.

Raw mode is a new feature that can be accessed by using software to change the camera's behaviour and change the firmware within the camera from it's default settings. The frame compression can be turned off and the in-camera sharpening and debayer-to-RGB processing is turned off. More can be found out about this feature here. Raw mode is for advanced users only.

You'll notice below, that there are 3 of Saturn's moons just visible, though you will need a correctly calibrated monitor to see them. From left to right is Tethys, Dione, and Rhea.


 

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Last Updated : Friday, February 11, 2021

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