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About AlistairW

  • Rank
    Proto Star
  • Birthday 23/02/1974

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  • Interests
    Chromatic Free Base Accordion, Chess, Astronomy, Boxing.
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  1. Dark vertical stripes on AstroArt stack

    Hi, Thanks for the reply. I found what i was doing wrong - i was playing around with master bias for flat darks. But was putting the master in the wrong section - think i ended up subtracting the bias twice - hence introducing the noise. I will put it down to the learning curve and avoiding using darks at all. Next is to learn how to create a defect map 😀 Thanks Alistair
  2. Dark vertical stripes on AstroArt stack

    Should a stacked bias of 30 frames look like this ?
  3. Hello, I have been using AstroArt 6 to stack a red channel. Using Flats, Bias as Darks, and Bias as Flat Frame for Darks. I seem to be getting a lot of vertical banding after the stack, that does not exist on the subs. Any ideas, as I am using the default options apart from having Sigma (Average) as the Result Image. Thanks Alistair
  4. InfraRed pass for Glass

    Not thought of that - thanks
  5. InfraRed pass for Glass

    Thanks for this I will give it a try - it appears the band I am trying to pass is .... (The 1045 Phidget Temperature Sensor IR uses long wavelength infrared (5.5 to 14 µm).
  6. InfraRed pass for Glass

    Hello, I am in the process of building a cloud sensor, and have managed to get one of these sensors working: https://www.robotshop.com/uk/phidgettemperaturesensor-usb-ir-temperature-sensor.html?gclid=EAIaIQobChMIqOqCr4Pa2AIV5grTCh3UwgbBEAQYASABEgJP2PD_BwE I have housed it in an acrylic case, but the issue I have is the sensor is at the bottom of a barrel, and is open to the atmosphere. I was thinking of using a microscope slide cover to place over the top to protect it from rain etc., but then I read that glass blocks IR. Ultimately I guess I need to experiment to see what works, but anyone have any ideas on materials that allow IR to be transmitted ? Thanks Alistair
  7. Pegasus Bluetooth losing connection to Heq5

    Thanks - good to know
  8. Pegasus Bluetooth losing connection to Heq5

    Hi, Just wondering how you got on as i have just got one of these. At the moment i cannot even get it to be recognised so I have not got very far. I am using Windows 10 too. Thanks Alistair
  9. Bluetooth Issue

    Thanks The bit of paper that comes in the box suggest it is compatible with win10. And I have tried updating the Bluetooth drivers, but apparently they are up to date. I seems to be suggesting it is fairly plug and play.
  10. Bluetooth Issue

    I brought a Pegasus Astro EQDIR box that effectively should turn my HEQ5 in to a WiFi enabled mount - it supports Bluetooth 2.1. My PC that is on my pier is Windows 10 and has Bluetooth 4.2, but I can not seem to see the Pegasus devise when I scan for it. The PC seems to pick up other Bluetooth devices fine, but I can't think what else to try. Thanks Alistair
  11. Hello, My HEQ5 EQDIR FTDI cable is far to long really for my requirements. Is there anyone that makes these cables to length, or know of ones around 50cm in length ? Thanks Alistair
  12. Hello, Been thinking about this for a while - my scope is on a pier and runs semi automatically over night capturing data. Rain is always a concern when unattended - so what i do currently is get SGP to send me a SMS message if PHD loses signal - which usually means a cloud has come across. This seems to work quite well, and i get a message to wake me in about 30 seconds. I have been considering a cloud sensor but i am not sure this is going to give me any further benefit. Of course the method above only takes in to account cloud that in the direction the scope is pointing and not any cloud that is directly overhead. Is a cloud sensor without an observatory really worth it do you think ? Alistair
  13. Was looking at this - wondering if it had potential as a rain sensor: https://wireless-sensors.co.uk/wireless-water-detect-plus-sensor?gclid=EAIaIQobChMI26D02Zu-2AIVEWwbCh26SwwlEAQYASABEgI5T_D_BwE
  14. Hello, If I guide North only in Dec via PHD2 and then invoke a Meridian Flip, do I then need to guide South, and would PHD2 know about this? (I am running this all through SGP). Thanks Alistair
  15. Hello, I was imaging the Pleiades up until my EQMOD mount limits were reached. I did not do a meridian flip, but instead manually ran another routine to simply pick up from where it left off. The image just looks inverted now. How do I take account of that in stacking software ? Thanks Alistair.