Pier 4 - Ultra Widefield

Sigma Art 105mm f/3.2 Colour

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Telescope

Sigma 105mm F/1.4 ART lens stopped down to F/3.2

We could use this lens wide open but stopped it down as well as it tightens up the corners a small amount, it’s an exceptionally well corrected lens that will deliver stunning detail that requires ridiculously short exposures.

Pier-4 is a very fast F/3.2 when used with a CMOS sensor the longest exposure needed for this pier is 180 seconds

 

 

CMOS Camera

The ZWO ASI-2600MC Pro Colour CMOS is one of Sony's new generation zero ampglow sensors. They are super sensitive with very low noise. Making them a paradym shift from the CCD cameras we are all used to using and require much shorter exposures

This camera is set to Gain 100 as our default.

Imaging with colour cameras:

When you recieve your data, at first glance it may appear green, this is normal because One shot colour cameras have a bayer matrix over the sensor, this particular sensor has a RGGB bayer matrix and you will need to de-bayer it as part of your calibration and stacking process in your chosen software.

Telescope

Sigma 105mm f/1.4 @ f/2

Camera

ZWO ASI-2600MC Pro Colour

Mount

Paramount MX

  • Telescope

    Sigma 105mm f/1.4 @ f/2

  • Camera

    ZWO ASI-2600MC Pro Colour

  • Mount

    Paramount MX

Equipment List

Telescope
Sigma 105mm F/1.4 Art Lens Stopped down to F/3.2
Mount
Paramount MX
Camera
ZWO ASI-2600MC Pro Colour CMOS 1x1 Binned
Filter Wheel
N/A
Filters
N/A
Guide Camera
N/A
Guider
N/A
Focuser
Astromechanic Lens Focusing System
Power Control
HitecAstro MHP V4

Sony IMX571

Back illuminated CMOS Sensor
23.5x15.7mm
6248x4176pixels
3.76µm
Bayer Matrix Parameters

RGGB

  • 12.82° x 8.57°

  • 7.64 "/px @ 1x1 Binning

  • 101.7mm Focal Length

  • F/3.2

  • 20º Imaging Horizon Limits

  • Camera Position Angle: 359°

  • Recommended sub lengths

Broadband Imaging

FilterBrightDim
OSC
30-60s

60-180s

  • Imaging subjects with brighter cores will of course require shorter sub lengths for HDR, your personal experience will be needed to gauge this yourself.

  • Please remember this is only a guide above, we are just trying to help you have the best experience possible remote imaging with Roboscopes.

  • Although we have taken Bias frames we do not recommend using them with CMOS sensors.

  • Roboscopes supply the site and control the equipment but you choose everything else from filters, object/co-ordinates to sub lengths. So you need to exercise due diligence and experience when booking because if you fill the booking form out with incorrect details then you will get precisely that.

  • It is not Roboscopes responsibility to check your detailed requirements after you have booked. Basically garbage in garbage out!!


  • Filter weights

Get accurate star colours with recommended colour balance

FilterWeight
Red

N/A

Green

N/A

Blue

N/A

Calibration Files

The following calibration files are available as standard with this system. Other darks are available upon request.

  • 5s Darks

  • 10s Darks

  • 20s Darks

  • 30s Darks

  • 45s Darks

  • 60s Darks

  • 90s Darks

  • 120s Darks

  • 180s Darks

  • 240s Darks
  • 300s Darks

  • Flat Frames

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802 Kingsbury Road
Birmingham
B24 9PS
United Kingdom


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