A William Optics FLT132 I hear you mutter, well before you go any further try it I dare you, it will shock you with how good it is I tell you. I have owned many 5” APO’s and this is as good if not better than all of them.
Its field is flat, it has tiny stars and colour correction is spot on, combine this with a relatively fast F5.6 and you have a short/medium focal length astrograph that ticks all the boxes.
This telescope when combined with a 4/3rds sensor have a smaller FOV so is a great way of getting up close and personal without having to use massive focal length telescopes and all the added expense that entails.
Just in case you have never used CMOS and have been using CCD like the rest of us for the last million years then let me tell you it requires a different approach, you can forget long subs as the are not needed and at most times detrimental to your image quality.
Allowing for CMOS’s sensitivity, higher dynamic range and super low read noise broadband imaging typically 60s is ample and 120s for narrowband, you just needs a lot more of them of course. This camera is set to Unity Gain as our default.
Pier-7 is an unguided system so the maximum sub length is 300s
4/3" CMOS Sensor
Bayer Matrix Parameters
1.32° x 1°
- "/PX @ 1x1 Binning
768mm Focal Length
25º Imaging Horizon Limits
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.
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.
Get accurate star colours with our filter weights
This pier has a FREE calibration library, this includes a dark library that correlates to the most common subs lengths used, see below
Flat Frames - L, R, G, B, Ha, o3, S2
If you choose more individual sub lengths eg 550s, then darks are not included in the price and are taken for you on an individual basis. Please add darks to your imaging run in checkout.
M16 The Eagle Nebula
M31 The Andromeda Galaxy
M42 The Orion Nebula
802 Kingsbury Road