Peter Goodhew FRAS

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  • in reply to: Fighting Dew #583591
    Peter Goodhew FRAS
    Participant

    I manage to image at up to 100% humidity. I have a dew shield and dew heater strap around the refractor glass. I find that I get the same misting of the glass as you show if I turn the heater on just as I start imaging – and it can take an hour or so to clear. So I turn the heater on well before I start – at least an hour beforehand.

    in reply to: 100th Handbook Cover Image #583001
    Peter Goodhew FRAS
    Participant

    Here’s another offering showing the moon every 2 minutes until occultation

    Peter Goodhew FRAS
    Participant

    Clouds prevented me from capturing this from London, but there were clear skies in Spain so I managed to capture it from there at 09:18 CET this morning. The image was produced using a short exposure (1/100th second) and a red filter.

    Peter Goodhew FRAS
    Participant

    I did some test imaging this morning of both the moon and venus.  Both red and Ha filters worked fine, although I felt that the Ha was more successful – don’t ask me why! The key thing is that the moon requires one tenth of the shutter speed of that venus needs.  So the choice is an over-exposed venus or very faint moon. In my case the moon was best at around 0.3s with the Ha filter, and Venus at 0.03s.  I’m tempted to try with both exposures on Friday, and then combine the images.

    Peter Goodhew FRAS
    Participant

    Yes of course I will.  I have used Ha filters on the moon in daylight, but as David Arditti suggests a red filter might also be an option.  If I get organised I will try different flters on both the moon and venus separately before they get to conjunction, and then capture the conjunction with whatever seems to work best.

    Peter Goodhew FRAS
    Participant

    I will try and attempt this, weather permitting of course.  Will experiment on the moon beforehand to see how well it comes out with different filters.

    in reply to: M64 The Black Eye Galaxy #579939
    Peter Goodhew FRAS
    Participant

    Xiaoli, here’s an image I took last April too. Hope it helps. Peter

Viewing 7 posts - 1 through 7 (of 7 total)