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Phil

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Everything posted by Phil

  1. Thanks for this. I'll take a look. Also got somone hopefully quoting for making the same.
  2. My problem is not increasing the distance, it would already be too long. The problem is finding an M42x0.75(T2) to M42x1.0 adapter that adds less than 7mm to the optical path. I already have a set delrin spacer rings but to use them I need a shorter adapter.
  3. Hi there, I am looking for a way to attach a couple of manual M42 lenses to my ZWO ASI071 Pro camera. I know from an old thread on here that the flange focal distance for the M42 lens system is 45.46mm. My camera has a sensor depth of 17.5mm and my filter draw is 21mm wide. This leaves 6.96mm for an M42x1.0 female to M42x0.75 adapter to allow my lens to be screwed into the back of the filter drawer. The only adapters I can find add 7mm to the focal train. Has any one tried doing this and will the additional 0.04 mm of length make images taken with my 200mm F/3.5 Takumar look noticeably out of focus? Thanks, Phil
  4. I saw that but as I bought the item from ENS Optical and not one of their listed UK dealers I thought it a bit cheeky going to FLO. But I'll give them a call anyway and see if they do just the bracket I need.
  5. Hello all, I've just purchased the Rigel usb-nSTEP focuser kit for the Baader Steeltrack Newtonian focuser forgetting at the I saw this at a bargain price that my focuser is a Baader Diamond Steeltrack focuser. Clearly, at some time in the past there was a non-diamond type since the brackets with the kit clearly aren't made for the focuser I have. Rather than send the kit back I thought I'd ask on here whether anyone has contact details for RigelSys.com in the states so that I can ask them if they do a different bracket for the BDS. There are no contact details on their website. I realise that the bargain price reflects that what I have bought is probably new old stock. Thanks, Phil
  6. I had some nichrome wire and heat shrink left over from making dew heaters for my OTAs so I made a dew heater for my TelRads. I tightly wound the heat shrink wrapped nichrome around a length of ductile garden wire. I had shrunk the heat shrink onto the nichrome wire beforehand. Electrically the nichrome wire and the garden wire run in series. I then put larger diameter heat shrink over whole lot. It was then just a matter of forming the heater into the shape you see in the picture to fit into the Telrad and applying a touch of epoxy resin glue to keep it in shape. The heater is held in place by friction so that it can be removed.
  7. I have just completed a similar project. Mine seems to cool the sensor down to 15 or so below ambient as reported by the Exif temp. Created for my EOS 600D. It will keep a steady Exif temp of 5 deg C on 300s subs if I put a 15s pause between exposures. Could possibly go colder when the ambient temp is sub zero but it's a balance between cooling a power consumption. It is using a 5 amp TEC.
  8. Taking a DIY approach I have just ordered one of these: chinkyboo Black Folding Bicycle Bike Carrier Bag for 14" / 20" Frame Folding Bikes Some of this: 1" High Density Upholstery Foam Sheet And some trim fix. If it works it'll be a lot cheaper than the other options I see on here.
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