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Home Forums Observing and Imaging Group More images of the Sun

This topic contains 6 replies, has 4 voices, and was last updated by  Les 1 year, 9 months ago.

Viewing 7 posts - 1 through 7 (of 7 total)
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  • #9223

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 746

    This enormous active region on the Sun certainly seems to encouraged lots of images to be taken.

    We’ve received a couple of images in the last few days from Flamsteed members.

    The first is from John Williams, who imaged the Sun using a Coronado PST and an SPC900 webcam:

    The second came from Martin Male with a white-light image of the Sun, taken on Monday this week:

    Both images have been added to our gallery for the Sun: http://flamsteed.info/image-gallery/nggallery/galleries/the-sun

    • This topic was modified 2 years, 8 months ago by  Mike Meynell.
    #9239

    Tej
    Participant
    Topics: 36
    Replies: 582

    Well done, John, its difficult getting focus on the PST with a webcam, yet you got all the features, nice. The white light image is great, shows the stupendous scale of those huge spots in relation to the sun disk.

    #11185

    John Williams
    Participant
    Topics: 2
    Replies: 10

    Hello Tej

    Regarding the focusing of the Coronado PST, I have built a box to house my laptop. I have a piece of blanket which covers my head and keeps most of the light out. I have made a stout bracket to fix the PST to my tracking mount. I can easily reach the focus control when seated at the laptop. I go carefully through the focus point several times until I have the best point.For this picture I used an SPC900 webcam fitted with a 2 X barlow lens. I removed the colour from this picture, then added false colour.

    #11187

    Tej
    Participant
    Topics: 36
    Replies: 582

    I cant see the picture John??

     

    I have since been using a QHY5L-II camera to image the sun which enables me to achieve focus btw.

    This was one such image:

     

    Solar filament, sunspots, plages and prominences

     

    Problem I have with that camera, though was that I get these Newtonian rings on my images.  Rupert then taught me to tilt the camera slightly to eliminate them which worked!  However, I also find that having the image move around a little bit while recording and then be stacked also eliminates the Newtonian rings.

     

     

    Look forward to seeing your sun image when you upload it again.

     

    Edit:  Oh you meant the pics from last year above!  Doh!

    • This reply was modified 2 years, 2 months ago by  Tej.
    • This reply was modified 2 years, 2 months ago by  Tej.
    #11192

    John Williams
    Participant
    Topics: 2
    Replies: 10

    Nice picture, What does focus btw mean?

    #11195

    Tej
    Participant
    Topics: 36
    Replies: 582

    “btw” is abbreviation for “by the way”.  Sorry about my Yoda english, that should have come at the start of the sentence!

    #11976

    Les
    Participant
    Topics: 1
    Replies: 13

    This is my first ever Sun image. . . Taken with approx 30 seconds of neximage cam stacked using a coronado at a camp I went to about 3 years ago

     

    My First Sun image

    • This reply was modified 1 year, 9 months ago by  Les.
    • This reply was modified 1 year, 9 months ago by  Les.
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