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Everything posted by bomberbaz
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Been flipping between this and a thread regarding binoviewing and if my understanding is correct that in a slow scope (F10 or F12) if I wanted to use binoviewers I could arrange my kit in the following order. Diagonal - ANC - Barlow - Bino/Eyepieces. The reason I ask is that the increase in the focal train when using binoviewers means a 2x barlow is actually around a 4x increase. So if you then stick the ADC after the barlow you are probably up over x5. Can anybody add weight to this as I am thinking of having a go with the frac and binoviewers.
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Ah yes, seen them mentioned before now you remind me. I only use the binoviewers with the mak so it isn't a problem that I come across. Thanks Steve
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sorry got lost on this thread, what is a gpc
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glad you got to enjoy it so much, it has been a great comet for sure
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Sky Watcher 130PDS Collimation
bomberbaz replied to Jamgood's topic in Getting Started General Help and Advice
Next a picture through a cheshire or similar down the drawtube. -
Sky Watcher 130PDS Collimation
bomberbaz replied to Jamgood's topic in Getting Started General Help and Advice
Leave it there, that is absolutely fine -
Good report, your getting the same skies as I am. However I was viewing Neowise up til midnight then a couple of double after that. It wasn't Neowise at 9.30, earliest I have picked it up is around 10.30 but that was when it was a magnitude brighter than it is now.
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didn't try mine last night, too hooked up on other things. However while doing a star test with the achro 102 on Arcturus I really noticed the prism split colouration on it. It was strikingly strong and a lot more than I had expected with the achro, quite remarkable. Had I had the time, i would have given it a go but there is always next time now I have a target to test it on.
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I remember seeing it going on on the tv but i was only 6 and didn't realise the significance of it. And also happy birthday Gina. 🎂
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First Scope Daughter and I
bomberbaz replied to hms_furious's topic in Getting Started Equipment Help and Advice
Mak always attract dew, I use a homemade dew shield although FLO sell them too. https://www.firstlightoptics.com/dew-prevention/astrozap-flexible-dew-shield.html -
would be even better without those trees behind it. 👍
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First Scope Daughter and I
bomberbaz replied to hms_furious's topic in Getting Started Equipment Help and Advice
I use a 127mak on my AZ GTi, the mount easily manages with it and the scope is a decent all rounder. You can even use it for basic phone photography. Oh and get the extension tube. -
Just had a read of this, quite straightforward to align the ADC but tuning it is an altogether different thing. Thinking trial and error on tuning will be the order of the day.
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It's still a naked eye object John although fading noticeably from last week when I first made this post. Actually just had my 20x60 bins on it, however although it was brighter, low cloud had reduced the definition.
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ah yes good point well made Not on your own John, somewhat perplexed myself now.
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Fairly easy visible here tonight, keep looking out (during ad breaks of Blues Brothers) and it is just above neighbours house roof. Looking brilliant in the 10x30's I have managed to get several captures on both time lapse and single timer delay on my all in one. Used varying ISO settings so will see if I can bolt together a decent image from the conglomeration of data. Steve
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Alignment for what Shane. It is an AltAZ scope so the alignment of the ADC is still with the horizon unless you mean something else. 😁
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Why the bubble level guys, is it to assure the eyepiece setup is vertical ? I am happy with my understanding of the rest of the set up but not this!
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Does buying more gear really make you any happier ?
bomberbaz replied to Solar B's topic in The Astro Lounge
Well said shane, I tell swmbo what I am buying and happily she doesn't care two hoots as long as I never say to her we can't afford something she wants due to an astro related purchase. If I did that, questions may be asked. She is actually more concerned with the space kit takes up in our living room. So I have told her my new truss dob (soon to arrive) will be packed down small enough to store in the garage so I can sell the the 10" pushto that sits in the living room. She is happy as larry over this, and so am I 😘😅 -
Just been having a look at the sybony eyepiece range and I think your favoured 18mm is a modified erfle design which should work well at F15 and if you like it, keep it. However I agree with John above saying get the zoom and keep the 6mm for those odd nights when seeing allows for exceptional magnification. If you don't get on with an eyepiece, I always say don't persist and get rid. Keep the 26 and lose the 32mm. I think that if you buy the zoom you may stop using some of the others almost entirely and then you can decide from there what to do.
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I don't see the point of this eyepiece...
bomberbaz replied to Ags's topic in Discussions - Eyepieces
Quick check on a spreadsheet shows a cheapish 32mm erfle in my 10" dob gives x38, 1.9 tfov and only a 6.8 exit pupil. Use of this vixen gives x12, 0.9 tfov and 21mm of washed out exit pupil to play with. Even with a F10 100mm frac the results are equally woeful. If the OTA is F15 then it's a possible maybe, other than that I wouldn't waste my time. Sorry to be so negative, it's not like me but I really think vixen had a little something extra in the tea urn when they put this idea through from design. -
Please allow me to add to the clouds with a APM 20mm/70 degree illuminated spotting eyepiece. In my 80mm spotting scope gives a very useful x17 magnification and 4.2 degree fov. Great compliment to the telrad. Altair ADC, hoping to give it a whirl on either sat or sun night weather depending. Sky quality meter which came about as I realised a refund I had forgotten about and left me with a positive balance on credit card. Well had to be spent on something.
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I was mulling this over last night and thinking about multiplication of any lens placed in front of a binoviewer and that it is circa double the stated power of the lens arrangement being used. So am I correct that for a 1.6 barlow lens attached directly to the BV, this will give me x3.2. For a 2x barlow I get x4 and finally if I use my 2x tele extender we still have x2.
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I think get the 14mm Baz. That barlows to a very useful 7 a tad over x200, the 12.5 barlowed is going to x240 and will be used less. You will end up getting a 17.5 morpheus as well. In conjunction with a decent barlow that will give you a really good cover over mid and high range magnifications. PS, then get the 12.5 as well. You will end up selling all the bst's, lol