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Astro Advice

Discussion in 'General Photography Discussion' started by Pete15, May 19, 2017 at 4:49 AM.

  1. Pete15

    Pete15 Premium Member

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    Weather permitting, I will be attempting shots of the Milky Way from a very dark vantage point in northern Vermont with the X-T2 and Rokinon 12mm f2.0 this weekend. I'd appreciate any and all advice that could help me fully utilize this rare visit to such a dark sky with a camera and lens bought to capture such events. I'm going to get some competition mountain biking during the day light hours too, with the 55-200mm, and am very excited to use the AF of the X-T2, having used the X-E1 last year.

    Pete
     
  2. ojporqpojrewpo

    ojporqpojrewpo Premium Member

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    The Rokinon is perfect for this.
    • Try to establish the infinity setting of the lens during the day
    • Start with ISO 3200, F2 and 30s
    • Have a tripod
    • Shoot RAW
    • Use the built-in timer to avoid shake or use intervalometer with bulb mode
    • Have fun!!!
     
  3. Pete15

    Pete15 Premium Member

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    Thank you. I've got an electronic cable release and sturdy tripod, and I was going to zero out all settings. Should I use noise reduction, and what's the max ISO I should max out at to get a manageable RAW image?
     
  4. ojporqpojrewpo

    ojporqpojrewpo Premium Member

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    From my experience ISO 3200 works well as a starting point. I have shot between 1600 and 6400. It depends on the light.
     
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  5. Jonny2773

    Jonny2773 Well-Known Member

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    I was hoping to do the same thing in the UK as I have just purchased the same 12mm lens except I'm pairing up with an iOptron Skytracker pro for the first time. I have shot astro in the past with my 18-55 and got reasonable results but by all accounts the Rokinon/Samyang is the right tool for the job.
    I also shoot mountain bike races and I find the 55-200 is just not quite as sharp as I would like it and sometimes a little slow to focus, this shouldn't cause too many issues as the XT-2 AF is pretty good and compensates but I think if you were thinking of doing this kind of photography often then the 50-140 is the lens of choice (next on my shopping list).

    Ive always shot ISO 3200 in the uk for my MW shots BTW
     
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  6. antiphotom

    antiphotom Member

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    Have a look at this:

    Lonely Speck

    FnF
     
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  7. 5280Pics

    5280Pics Well-Known Member

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    I always try to keep my shots right around 20-25 seconds. Any more than that and you can start to see the movememt of the stars. Its not much but, it can help the overal photo look sharper.
     
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  8. HonoluluGator

    HonoluluGator Active Member

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    Get a few Hot Hands and wrap them on the outside of the lens, use gaffers tape. Keeps the lens warm and prevents condensation on it.

    Set it to 2.o, 3200, 20-25 seconds and have it take a photo every minute all night long. Can then use software to stack images and reduce noise. If your really want to be fancy take a few shops through the night in same environment with same settings and then lens cap on to establish background noise. Once you get your hundreds of images, use free time on a rainy day to evaluate post processing and image stacking options through Google search.

    I agree, Lonely Speck a great place to start.

    ooops... almost forgot. Bring a headlight, make sure you have an interesting foreground or landscape, and experiment with illuminating the foreground with the headlight. A good starting point is a weak headlight and about 1/2 to one second of near foreground illumination and 2-3 seconds of mid foreground illumination during the 20-25 second exposure. I like to set the camera to take pictures automatically and then just experiment until I fall asleep.
     
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  9. shoessar

    shoessar New Member

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    See two picture

    1) XT1 with 16mm

    2) X-T2 with 12mm Rokinon

    Parameters for both pictures:
    ISO 1600
    F2.8
    20sec

    * For 12mm Rokinon on X-T2 I am not 100% sure about parameters.

    IMO: XT1 has more dynamic range and better suited for time laps photography. Never gave any error. Insted X-T2 gave me error lots of time in time laps.

    Can't upload any picture via android
     
    Last edited: May 20, 2017 at 7:52 PM

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