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Pier 11

Takahashi FSQ-85

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Telescope

With a short focal length of mm combined with a relatively fast speed of F/5.3 the FSQ-85ED is the perfect telescope big nebular and larger galaxies. With a nice flat field and no false colour it’s a lot of fun and will surprise you with what it can do under good skies like ours.

The telescope is F/5.3 and is fitted with a low noise CMOS camera set to unity gain, even in narrowband the longest sub length needed is only 300seconds. if you book subs longer than this Roboscopes will contact you to alter them to more suitable lengths that suits the system!

CMOS Camera

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.

Please note: The maximum sub length we will do on this pier is 300s

Telescope

Takahashi FSQ-85

Camera

ZWO ASI 1600

Mount

10 Micron GM1000

  • Telescope

    Takahashi FSQ-85

  • Camera

    ZWO ASI 1600

  • Mount

    10 Micron GM1000

Equipment List

Telescope
Takahashi FSQ-85 with 0.73 Reducer
Mount
10 Micron GM1000
Camera
ZWO ASI-1600 MM Pro Mono CMOS 1x1 Binned
Filter Wheel
ZWO 31mm 7 Position + Drk
Filters
Astrodon LRGB Ha-3nm O3-3nm S2-3nm
Guide Camera
n/a
Guider
n/a
Focuser
ZWO EAF
Power & Dew Control
HitecAstro MHP V4

Panasonic MN34230

CMOS Sensor
17.3x13mm
4656x3520pixels
3.8µm

Bayer Matrix Parameters
place holder place holder
  • 1.74 "/px @ 1x1 Binning

  • 450mm Focal Length

  • F/5.3

  • 25º Imaging Horizon Limits

  • Camera Position Angle: 1°


  • Recommended sub lengths

Broadband Imaging

FilterBrightDim
Clear
n/a

n/a

Lum
30-60s

120-300s

Red
30-60s

120-300s

Green
30-60s

120-300s

Blue
30-60s

120-300s

Narrowband Imaging

FilterBrightDim
Ha 7nm
120-180s

240-300s

Hb
n/a

n/a

O3 7nm
120-180s

240-300s

S2 7nm
120-180s

240-300s

N2
n/a

n/a

  • 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

  • Filter weights

Get accurate star colours with our filter weights

FilterWeight
Red

1.176

Green

1.000

Blue

1.204

Calibration Files

This pier has a FREE calibration library, this includes a dark library that correlates to the most common subs lengths used, see below

  • 5s Darks
  • 10s Darks

  • 20s Darks
  • 30s Darks

  • 45s Darks
  • 60s Darks

  • 90s Darks

  • 120s Darks

  • 180s Darks

  • 240s Darks
  • 300s Darks
  • Flat Frames

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.

CMOS Cameras do not need Bias frames as part of their calibration routine.

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Planewave
10 Micron
ZWO

Company Details:

Roboscopes

802 Kingsbury Road
Birmingham
B24 9PS
United Kingdom


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