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Marvin Jenkins

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Posts posted by Marvin Jenkins

  1. Nice to know us B3 dwellers have just enough eye sight to do it.

    Observational astronomy is on the decline, we all know that. It is not a result of AP becoming more popular but just that you need to be driven and dedicated.

    Most of all you need dark skies. #jetstream has them but at a cost in life style most country dwellers would run from. I personally would love to have that darkness.

    #jet stream, what do you think the Bortle limit would be? I saw repeat nebulosity around the running man with a 5” newt in B3 skies.

    Am I seeing things as I think at that aperture you are B1 or better. Just want to say that I am a completely worn wreck at 50 but my eyesight is crazy good. Often I go places with friends and say look at that, and then I spend sixty seconds working out what they are doing.🤣

    Marv

     

    • Like 1
  2. The open cluster sure is a great companion to ZTF. 
    To be honest I didn’t know it was there until I looked at the display on the back of the dslr.

    I must try harder at observing. My star chart clearly shows it as something special. Gfamily, thank you for the compliment but #Scooot image is what I would like to produce.

    Yeh, I don’t like all those stupid names for clusters. Call me a geek all day long but much prefer NGC classifications.

    Marv

  3. 2 minutes ago, kev said:

    i've not seen the comet yet.  work this week has been horrendous but in any case weve had cloud along the coast here in Scarbro’.   

    ps youre drawings good! 

    Thank you for the drawing compliment. I am trying to get my hand in to attempt some Lunar sketches. 
    The quality of the sketches on this site are amazing. 
    I think of my solar sketches as just information recording.

    I hope you get to see ZTF. There is a heads up on a different thread on here that ZTF is right next to Mars tonight (right now) so fingers crossed you have some clear skies.

    Marvin

    • Like 1
  4. On 07/02/2023 at 17:31, Sunshine said:

    It seems like Royal Mail runs on Astro Physics timelines. 

    Tell me about it. I ordered a Geoptik adapter plate so my EQ5 mount could go an EQ6 tripod I was given by a friend.

    I ordered from RVO but chose to have it sent to a friend in the UK instead of directly here to France as the shipping was £40!

    My friend then popped it in the post to me for £8.40 and over a month later it has not arrived.

    This is the story of What the postman didn’t bring. The worst bit is the adapter was supposed to free up the 1.75” tripod that came with the EQ5 mount.

    This tripod was then going to have my AZ5 visual kit on it instead of the wobbly tripod supplied.

    I am always just one step away and £100 out of pocket. None of this is the fault of RVO I should add.

    Marv

    • Sad 2
  5. 10 minutes ago, niallk said:

    The Telrad is a most worthy winner! 😂

    I don’t agree with that at all so I moving the Dobsonian that wasn’t even in the last top three to the only spot.

    No1 John Dobson, you absolute ledge. I would have loved to have met you. Doing what you did and not looking to make a buck! How the world should have learned your lessons.

    Some have of course but very much in the minority. I for one started this vote with the idea of finding the most historic scope but just like all those programs on tv I am buying a Bugatti and moving to LA. The light pollution is awful though.

    M

    notice I have cut my name down to a letter like Prince. The LA life will do that to an astronomer.

    • Haha 1
  6. I am thinking the same thing as fozzybear.

    I have that mount but the goto kit so I was reluctant to post. Your first vid clearly shows the mount motors working so I don’t think you have an issue.

    I am presuming with this motor kit you find the object with the clutches off. Lock clutches and center objects with the knobs then use the controller to follow the object.

    One question? I don’t do anything internet based except this place. Is it normal that your videos are YouTube?

    Most people on here from my experience put up a video without a third entity involved. Perhaps this is how it is done now🤷🏻

    Marv

    • Like 3
  7. 3 hours ago, Celerondon said:

    Okay Marvin, here are my choices. 

    Galileo’s gift: The telescope that Galileo gave to Duke Cosimo II offered multiple benefits to the seminal modern astronomer that influenced all that followed.   That refined version of his initial efforts demonstrated Galileo’s development as a telescope designer and builder and proved the utility of this new tool for scientific research.  Although primitive by our current standards, this singular instrument revealed the heavens to Galileo and his audience, which was and is considerable, because of the significance of his discoveries and his gift for self promotion

    The Great Dorpat Refractor: I could stress the significance of placing a massive high-quality telescope at the disposal of a talented astronomer but that tends to happen routinely in this field.  Despite the stellar credentials of Joseph von Fraunhofer and F. G. Wilhelm Struve and the outstanding optics of Fraunhofer’s telescope, optical quality and specific discoveries might not qualify this telescope for the list either.  

    No, in this case, “It’s All About That” Base!  I won’t apologize to  Meghan Trainor for the pun since she beat Sir Mix-a-lot only because his rhymes wouldn’t quite fit in this family friendly forum. 

    The Hooker 100”: The 100” reflector at the historic Mt Wilson Observatory made my list because of the massive leaps in knowledge that it enabled and because I think that George Ellery Hale needs to be mentioned in any discussion about important telescopes.   A cynical judge might think that this is a way of squeezing the 40” refractor at Williams Bay, the 60” on Mt. Wilson, and the 200” on Palomar Mountain into consideration, but enabling us to understand and discover the size and expansion of the universe ought to be enough to earn that chunk of plate glass a place on anyone’s list. 

    Sorry #Celerondon but the voting has closed. Your provider may still charge you for you call.

    The voting requirements were that Gals frac and JWST were excluded, I assumed they would distort any voting as first the most obvious and the last being the most recent so also the most obvious.

    You mention a cynical judge in your carefully worded but sadly late reply and I have to agree as judge and judicator of this vote that I am cynical and do not agree with results at all.

    I have decided to scrap the vote! I now declare the winners.

    1/ Telrad

    2/ Red dot finder

    3/ Tasco small starter scope.

    Just so you know there is no corruption or voter fraud on my part, my suggestion did not win.

    • Haha 2
  8. I have decided to call the voting to end. Please do not vote after this message as you may still be charged.

    In third place The Hubble Space Telescope.

    In second place Herschel 20

    In first place by just one vote The 100” Hooker.

    Just in case anyone wants to know The Dobsonian was the best of the rest and with all the telescopes on Hawaii, only one gained one vote.

    Thanks everyone for voting.

    Marv

    • Like 2
  9. I have been thumbing through my Astro diary after observing Comet C/2022 E3 ZTF. I thought ‘that must be my fourth comet’. However it is my seventh, possibly eighth since 2019.

    My first was 46p Wirtanen the full title I will try and find in other resources. I need help with the following.

    I would like to know the full titles for the following comets to complete my records.

    Iwamoto observed 13/02/2019.

    Panstarrs observed 13/04/2020 just a few days after C2018 W2 Africano.

    I look back to my earliest notes and can’t believe the lack of detail. I haven’t even noted constellations🙈

    I have an entry for C2017 K2 Panstarrs dated 17/07/2022. Could this be the same comet? I doubt it as they are more than two years apart.

    A big thank you to anyone who can give the full titles of the comets and clear up the question of whether the two Panstarrs are the same. If they are not, I am up to eight.

    I promise I am keeping much better records now to prevent a repeat of this in the future.

    Marvin

  10. 6 minutes ago, Ratlet said:

    I think it comes down to how the images is displayed.  Astroinmaging you stack the images and process them after the fact to get the most detailed final product and might image a target for hours.

    EAA you are generally stacking live with a bit of stretching applied to get detail out, but not heavy processing.  Time frames are generally shorter per target.

    It's the difference between 'good and good enough' in a way

    Not sure I completely understand your last paragraph. But I was under the impression that EEVA was actual observation in real time using a camera to stack an image to be observed there and then.

    I personally don’t think it is a case of good enough EEVA and good AP. They are two ways of using modern technology to observe real time or produce a picture.

    I am pretty sure that one day my eye sight will not be as good as now and the love of actuality observing could be extended with this method.

    The EEVA section on here I find fascinating.

    Marvin

    • Like 1
  11. I have mounted the little thing on a leftover Orion EQ2, which I am giving to my friend John.

    It is not a good mount at all but I have shimmed everything including leg pivots and even filled the legs with dry sand!

    Anything is better than the spindly thing it came with and it means John has slowmo controls for the first time.

    John has also committed to replacing the diagonal with an Artesky unit and F891FB8F-6DC4-41F6-9384-850D5802D62C.thumb.jpeg.eb53cb2e10166e7f92c878c39b22f328.jpegpurchase an 8-20 something zoom EP. 
    I hope this gets him out even if it just Lunar every now and again.

    Marvin.

    • Like 1
  12. The Celestron is excellent optically but you need to upgrade the diagonal, put an RDF on it and buy a few EPs or a cheaper zoom.

    The tripod it comes with is wobbly rubbish so by the time that is all sorted you may well be able to but something better for the money.

    For photography I wouldn’t recommend it at all. However…… the end of the focus draw tube has a photo thread that accepts my Nikon t ring!

    next clear night I am going to put it on my guided eq5 with a dslr and see what I capture of Pliedes or M42.

    Marv

    • Like 1
  13. 17 minutes ago, DPF said:

    I have this scope which was bought for me by my wife as a Christmas present two years ago and my first post on SGL asked about its capabilities and for suggestions of what might be needed to ‘upgrade’ it.

    After receiving some great advice and support, I made some changes and purchased a new tripod, some eyepieces and a moon filter etc. I’m often jealous of the bigger/more expensive telescopes and wonder what it would be like to own one and what I can see, but I love my scope and what I have seen may not have been in as much detail as others but it has helped me to navigate the night sky and I have just posted my first sketch on t SGL.

    Most of all my little scope has enabled me to get outside, enjoy the peaceful surroundings and improve my mental well-being. 

    I am touched by your input. The night sky is something I cannot put into words. 
    You have your experiences with your scope that are as valid and real as anyone else. 
    I hope you have clear skies and I am sure you will enjoy them as will I.

    Marvin

    • Like 1
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