45EDII F5.0 & Standalone Autoguider

This is really unusual shape you’ve never seen. 45EDII F5 is the shortest focal length covering full frame sensor among BORG astrograph family at this moment. If FTF is used with, tube option is only 25mm long!! The picture shows an extra tube over the objective lens, which allows for 75mm length total for easier clamping.

b04550ftfs1.2 kg / 220 mm long

2046 – 7050(over the objective lens) – 7457 – M75/75 adapter – 7025 – FTF-BORG – FTF-M57 – 7870

Main challenge in this setup is how to manage to set proper weight balance while avoiding interfering with camera and mount. Tube is very short and the weight is way back heavy. This is challenging. But if you are looking for widest possible field of view with sharper optics than conventional telephoto lens in its class, this is the one. This also allows for reliable PC-control focusing.

Hutech has been appointed as the North American distributor for Lacerta standalone autoguider. One of most interesting features is the built-in dithering capability while synchronizing DSLR’s exposure and interval timing. This is perfect companion with DSLR and portable mounts.


This item looks very popular and highly demanded in Europe and Asia. The manufacturer seems to have a lot of back-order right now. Some units are expected to come in stock within a month or two. More number of units will be September or later. This will be available through Hutech dealers in US as well as Canada too. US price is $595.00 I was told SONY’s ICX279AL sensor was really sensitive. I will use myself once 1st lot comes in and shows various setup solutions with some Hutech original accessories.


~ by tedishikawa on May 22, 2015.

4 Responses to “45EDII F5.0 & Standalone Autoguider”

  1. Ted,

    How long is the tube section of the 45ED setup (before the focuser and the FTF-Borg)?

    • Hi Donghun

      Only 25 mm as main tube section and plus 50 mm over the objective lens. So total 75 mm as clamping area.


      2015-05-23 21:30 GMT-07:00 DigiBorg :


  2. Thank you Ted.

    Ted, do you think a dew heater can be used in this kind of set up?
    The heater needs to wrap around the objective and it can be challenging.

    • Donghun

      There is the sufficient room for dew hear band. But it must be a right length.


      2015-05-24 13:15 GMT-07:00 DigiBorg :


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