British Astronomical Association

Supporting amateur astronomers since 1890

Mr Jack Martin

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Viewing 20 posts - 201 through 220 (of 254 total)
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  • 10 November 2017 at 10:11 am in reply to: Current state of the Halpha campaign of VV Cep #578752
    Mr Jack Martin
    Participant

    Thanks for the update Ernst.

    I have been on holiday and will be sending more spectra next clear night. 

    Regards,

    Jack

    Essex UK

    10 November 2017 at 10:07 am in reply to: LED street lamps #578751
    Mr Jack Martin
    Participant

    THANK YOU everyone for your comments.

    We are lucky indeed to have software that filters out this nuisance.

    Its only a matter of time before they arrive where I live, but at least the lights are switched off from 1 to 5am.

    I have seen both types at night next to each other, a strange site !

    Regards,

    Jack

    Essex UK

    29 October 2017 at 12:33 pm in reply to: LED street lamps #578693
    Mr Jack Martin
    Participant

    Paul,

    Which software are you referring to ?

    Regards,

    Jack

    Essex UK

    29 October 2017 at 12:13 pm in reply to: Lhires results #578692
    Mr Jack Martin
    Participant

    Alun,

    Its certainly not a cheap hobby but if you want to do scientifically useful work its worth the expense and the rewards.

    I have been monitoring  vv cep since 2015-08-26 now have over 90 nights of data.

    Regards,

    Jack

    Essex UK

    21 October 2017 at 6:43 am in reply to: Lhires results #578654
    Mr Jack Martin
    Participant

    Alun,

    Welcome aboard, nice results.

    I use a modified Lhires III too, and have all the gratings.

    Regards,

    Jack

    Essex UK

    14 October 2017 at 9:47 am in reply to: Power Generators #578636
    Mr Jack Martin
    Participant

    Howard,

    Solar powered with an uninterruptable power supply.

    I have the latter in place.

    Regards,

    Jack

    Essex UK  

    5 October 2017 at 5:52 pm in reply to: A cautionary tale #578612
    Mr Jack Martin
    Participant

    David,

    I glad you solved the problem.

    Paul,

    I have not heard of this problem with the 414ex, but the one I had suffered from interference fringes especially visible on the flats, caused by the glass cover over the chip, so I exchanged for the 460 ex which works well.

    Regards,

    Jack

    Essex UK

    28 September 2017 at 8:04 am in reply to: PSN at2017gjn in NGC1067 confirmed using ALPY 200 #578583
    Mr Jack Martin
    Participant

    Robin,

    Congratulations I echo Jeremy’s comments.

    Regards,

    Jack

    Essex UK 

    28 September 2017 at 7:59 am in reply to: vvCep and agPeg #578582
    Mr Jack Martin
    Participant

    Hugh,

    Interesting to see how the H beta line is changing.

    Regards,

    Jack

    Essex UK

    28 September 2017 at 7:54 am in reply to: VV Cep in eclipse #578581
    Mr Jack Martin
    Participant

    Robin,

    Excellent work an interesting pattern.

    What is chromatism ?

    Regards,

    Jack

    Essex UK

    30 August 2017 at 6:30 pm in reply to: vvCep and agPeg #578507
    Mr Jack Martin
    Participant

    Steve,

    Nice spectra.

    Regards,

    Jack

    Essex UK

    25 August 2017 at 5:52 pm in reply to: VV Cephei news #578501
    Mr Jack Martin
    Participant

    Here is the latest VV Cephei H alpha emission profile for 2017-08-24.

    Regards,

    Jack

    Essex UK  

    19 August 2017 at 11:52 am in reply to: VV Cephei news #578481
    Mr Jack Martin
    Participant

    Robin,

    Are you monitoring the H alpha line ?

    Regards,

    Jack

    Essex UK

    19 August 2017 at 11:50 am in reply to: VV Cephei news #578480
    Mr Jack Martin
    Participant

    Robin,

    I have followed your instructions and opened the file in BASS.

    Thank you,

    Jack

    Essex UK 

    19 August 2017 at 11:35 am in reply to: VV Cephei news #578479
    Mr Jack Martin
    Participant

    Paul,

    Thank you for your encouragement, its good to know others are following the forums.

    Onwards and upwards.

    Regards,

    Jack

    Essex UK

    15 August 2017 at 8:23 pm in reply to: VV Cephei news #578473
    Mr Jack Martin
    Participant

    No changes in H Alpha emission profile as of 2017-08-13, I am continuing to monitor.

    Jack

    Essex UK

    12 August 2017 at 10:29 pm in reply to: VV Cephei news #578457
    Mr Jack Martin
    Participant

    Robin,

    I will open your fits file in my other computer which has the appropriate program.

    Regards,

    Jack

    Essex UK

    12 August 2017 at 10:23 pm in reply to: VV Cephei news #578455
    Mr Jack Martin
    Participant

    Robin,

    This was just a 300 s raw exposure uncalibrated, no dark or flat frames just to check if the h alpha line has changed.

    Regards,

    Jack

    Essex UK

    12 August 2017 at 10:20 pm in reply to: VV Cephei news #578454
    Mr Jack Martin
    Participant

    Robin,

    The response I am waiting for is if you are able to do a comparison between the spectra obtained by Marc and my spectra, as taken with Marcs C11 and my C14.

    Please refer to Marcs previous post for info.

    Regards,

    Jack

    Essex UK

    10 August 2017 at 10:42 pm in reply to: VV Cephei news #578445
    Mr Jack Martin
    Participant

    Robin,

    I can’t open your attachment.

    Regards,

    Jack

    Essex UK 

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