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reezeh

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Posts posted by reezeh

  1. I was thinking that they come in 2 inch, 1 1/4 inch and 0.965 inch...

    Putting humour aside, 6mm is getting to the high power end and as already mentioned the SLV 6mm is a great eyepiece.

    So my guess is this:

    Most designs at that focal length tend to have uncomfortably short eye relief and a 12.5mm with a 2x barlow is often seen as a better option.

    A plössl for instance would need your eye wearing the thing almost as tight as a contact lens.

    Most eyepieces with such short focal lengths with good eye relief could be quite pricey, so I guess that manufacturers just don't fancy making them fearing market saturation.

     

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  2. On 27/02/2022 at 19:54, mikeDnight said:

    I've always had a love of small refractors and started my astronomical adventures over forty years ago with a Prinz Astral 60mm. I can't remember all the details but it was sufficient to ignite my enthusiasm which has lasted ever since.

    They're actually great little scopes. They'll split epsilon Lyrae, which for a 60mm refractor is about as good as you can expect.

    I had / have one  (gave it to a friend, tried advising him on how to focus with it but he hasn't a clue.  Even linked the YouTube video on that to him) He has kind of offered to give it back. I'm short of house room but when I can accommodate it I would love to have it back. All I'd need to do is get a 0.956 to 1.25 adaptor and I can use my newer eyepieces and diagonal from my Celestron gear 

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  3. On 26/02/2022 at 17:46, Sunshine said:

    This is a great writeup for anyone thinking about a solar wedge, I will seriously consider a Baader wedge.

    It is a fantastic post. I have two 4 inch achromatic refractors and a 6 inch one too. When the sun is higher and the weather cooperates I hope to give the 6 inch its maiden voyage with the Altair wedge I have. Has some nice viewing with the 4 inchers last spring.

    I was scared at first to try because of the potential dangers of pointing a telescope at the sun and putting eye to eyepiece. But I am glad I did! 

    I've tried all my filters, an OIII giving sharp definition in my humble opinion, very similar to the solar continuum filter.

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  4. Owning but not using a 350D for a long time and never for astro, all I can say is shy away from high ISOs. Being an older model they're not exactly stellar performers when you ramp it up.

    The general rule with cameras of that era was to keep the ISO as low as possible to minimise noise and image degradation. Even 400 might be pushing it too far.

    I've accidentally left the ISO high and even daylight and sunny day pictures have been horribly grainy looking with my 350D 

  5. 6 hours ago, Zermelo said:

    and you mentioned previously that they will sequence the successful observation requests in the most fuel-efficient order. It sounds a bit like a travelling salesman type problem.

    They've probably compiled and sorted a list even before they got near testing phase on the ground. Or at least I hope they have.

    Problem with that is going to be what of anything new that deviates from the list more than a small amount, like say a sudden new exoplanet that just demands attention 

  6. 6 hours ago, Mr Spock said:

    Great word isn't it. I must try and work it into some conversations 😜

    Maybe you need to work it into some Scrabble games.

     

    On a new note I wonder if the shuttle was still available if the JWST could have been configured in low earth orbit then pushed out saving a load of fuel for the mission. Perhaps that might have been the original plan;  I don't know. It's a thought though if nothing else. 

  7. On 28/11/2021 at 15:40, Iem1 said:

    This was round 2, before I knew processing was a thing:

    1221992733_2ndandromedattempt.png.64034e2f76d0a7bb17785d65d3d8404e.png

     

    You know;  I actually like this rendition and attempt. Do you know why? 

    It's because this is how M31 looks through the telescope  (if you're lucky enough to be at a dark sky site and you have a good wide field telescope and eyepiece combination.

    So,  I wouldn't chuck it because it's refreshing to see images that also reflect what you might see

  8. 15 hours ago, Alan64 said:

    I'm still waiting on the extra 0.040" aluminum to arrive.  As I type, USPS states, "In Transit, Arriving Late". 

    Perhaps they're in cahoots with FLO's round sticker labels.

    I tell ya it's a conspiracy!

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