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Found 10 results

  1. From the album: Astronomical Equipment

    Heating my 21mm Baader Hyperion
  2. From the album: Astronomical Equipment

    I finally received enough of the parts for my DIY dew control system to begin making the first one.
  3. Hi, I'm looking at buying a dew controller and therefore need 12v power outside. I'm running my rig off of a 4 way plug socket in a dribox which is extended from the mains in the house into an RCD plug. Will these two items work fine for plugging a dew controller into?
  4. In October of last year I posted a review of the 'Quad Channel Digital Dew Controller' from a company called DewControl https://stargazerslounge.com/topic/280173-dewcontrol-dew-controller-and-heater-tapes/#comment-3067032. The website for the company is here: http://www.dewcontrol.com/ I liked the product back in October and I continue to like the product today. However, in my October review I did write: "One possible downside (or upside depending on your point of view) is that, when you power down, the unit does not 'remember' your settings." I must admit that I was caught out on two occasions by this. This was my fault of course. I need my gadgets to protect me from myself. Tim Duke of DewControl has now come to my rescue. He has updated his controller so that this is no longer an issue. The unit does not appear to have changed in appearance (at least to these eyes). It looks like this (please note the yellow arrows are my PS addition and not part of the unit): The unit is simple to operate. The only button is the one I have highlighted with my yellow arrows. As before you press the highlighted button (hold down for less than 1 sec) to cycle between 0, 20, 40, 60, 80 and 100 percent output. The lights on the left of the picture illuminate as follows: 0% power = no lights, then each light comes on singly for 20, 40, 60 and 80 percent. All four lights are illuminated at 100% power. So the pictured unit is putting out 80% power on channel 1. To switch channels, you just hold the same button down for a bit longer (ie, more than one second) and release. All four channels can be set at different outputs if desired. The good news is that you now have the option to set the Mk II so that on power up it either resets all outputs to zero or remembers your previous settings. To cycle whether the unit remembers or not, the user holds the same highlighted button down as you power the unit on - so decide which way you want the unit to behave. Set it once. Then forget about it. I have only had the Mk II unit a couple of days and I have tested the 'remembering settings' mode. It is remembering with 100% reliability so far. I have tried a heater tape in all 4 sockets and it all works as it should. The unit is lightweight and modestly sized. It comes with a belt-style clip for easy attachment to your scope or mount. We will clip ours to the elasticated part of our heater band as we did with the Mk I unit (see review linked to above). Tim can supply the unit with different cable lengths and power connection types - see his website for details. He seems a reasonable chap to deal with via e-mail. I still have no connection with Mr Duke or his company - I'm just a satisfied customer.
  5. From the album: Astronomical Equipment

    finished corrector heater
  6. From the album: Astronomical Equipment

    finished diagonal heater
  7. This is a quick review of the initial impressions of my just received W&W Astro 20cm large 2" eyepiece heater tape. My existing Astrozap 2" eyepiece heater tape failed while in use on Thursday morning . Luckily I use a fused heater system so only this was taken out and all other electrics were unaffected. The tape was two years old (so I had decent but not great service from it). It failed at the single most weak point in the wiring (obvious really), where it exits from the back of the tape you can now see exposed copper wire. Yesterday, I scoured the market and found this W&W Astro heater tape that has an alternative route for the wiring as it exits the heater tape (removing my perceived weakness from the previous tape). The wire comes out at 90 degrees to the tape rather than straight out the back. Here are some pictures First, lets compare the two eyepiece heater tapes side by side... Pay attention to where the wire exits the tape, particularly the angle. When the Astrozap tape is wrapped on a 2" eyepiece (smaller than the Ethos21) then it overlaps as you wrap it around and this puts pressure on the tape/wire joint at the back (this is where the wire has eventually broken) Second, look at the wire thickness. The W&W Astro uses a thicker wire that feels more flexible. We will see... Here is the new tape fitted on an Ethos21. The new tape is slightly shorter than the Astrozap. The W&W Astro large 2" eyepiece tape is 20cm. (They do two versions, a 15cm and a 20cm, make sure you get the right one!) Both tapes fit the Ethos21 (my biggest EP) but the heating element does not quite make it all around, the velcro tab however does easily pass over to stick to the other side (you can see the gap if you look carefully at the first photo below). Hopefully, this new exit angle of the tape and lack of overlap (of the wire) on smaller EPs (than the Ethos21) will result in a longer life for this tape... I just wanted to tell my story and highlight the area that I see as a problem with the Astrozap 2" eyepiece heater tape. Thanks, Alan Here is a link to the W&W Astro heater tape... https://dewheater.com/?product=ww-astro-dew-heater-20-cm-for-for-large-2-eyepiece-or-finderscope
  8. Has anyone had any experience with the new heated dew shield for the Telrad Finder (#DN18)? Any suggestions as to a small 12V battery pack unit to power the unit? Thanks for help and suggestions.
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