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 fast Unguided system so 300s is our longest exposure
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.
Back illuminated CMOS Sensor
Bayer Matrix Parameters
12.82° x 8.57°
7.64 "/px @ 1x1 Binning
101.7mm Focal Length
20º Imaging Horizon Limits
Camera Position Angle: 359°
Recommended sub lengths
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!!
Get accurate star colours with recommended colour balance
The following calibration files are available as standard with this system. Other darks are available upon request.
M31 The Andromeda Galaxy
802 Kingsbury Road