wookie1965
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Posts posted by wookie1965
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Just acquired this second hand looking forward to trying it out.
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31 minutes ago, ScouseSpaceCadet said:
A replacement tent. The Hi-Gear Enigma Elite 5. 4000mm HH, roomy for two, easy to pitch and cheap!
https://www.gooutdoors.co.uk/15908694/hi-gear-enigma-elite-5-tent-15908694
To be tested in the Peaks next weekend...
Very nice I've got a Berghaus air 6 really easy to put up 6000 HH
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3 hours ago, symmetal said:
You don't want to run the resistors near their maximum rating as they will be too hot to touch in free air and could cause localized hot spots around the scope.
To dissipate 0.2W per resistor (using 0.25W resistors) rearranging Ohm's law R = V^2/W = 12* 12 / 0.2 = 720 ohms. 750 ohms is the closest preferred value which would dissipate 0.19 Watts. If you have a stock of 330 ohm resistors you want to use up, you could put 2 in series for each 'rung' of the ladder where each rung would dissipate 0.22W (that is 0.11W per resistor).
If using 750 ohm resistors for each rung to dissipate 8W in total (from the above chart) you would need 8/0.19 total resistors = 42
If using 2 x 330 ohms in series for each rung, you would need 8/0.22 rungs = 36 rungs. So 72 resistors in total.
A 5" scope has a circumference of around 16" which is 40cm. So the 750 ohm resistors would then be spaced 40/42 cm apart or 0.95cm apart.
Using 2 x 330 ohm rungs each rung would be spaced 1.1cm apart.
Alan
Mine measures 48cm around the objective on its dew shield.
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I was going to make one with a ladder of resistors like this (half way down the page)
http://www.deepskywatch.com/Articles/newtonian-dew-heater.html
This page is the one I was going to use just need to know how many resistors please.
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I have got one of those dimmer switches and 330ohm resistors, but could someone tell me how many I need for a 5" refractor, so its not too hot but on the other hand not hot enough please.
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21 minutes ago, david_taurus83 said:
2 weeks to go. Hopefully the weather improves!
Me and you both as long as its dry we can still have a good time, just one clear night would be good though.
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A warm welcome to SGL ask anything on here someone will always answer.
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1 hour ago, Joecobbs said:
Hi, first post. Just found out about this star party and I'm very interested, but not sure what I actually have to do to book?Thanks
Hi email the site Shallow grange they will reply pay a deposit then the rest on the day hope you can make it be a nice little gathering.
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34 minutes ago, Cornelius Varley said:
Do any of the tubes unscrew ? It could be that you don't need all of them to reach focus.
I thought that but op tried and could not reach focus with them all in he had to pull the eyepiece out a bit to achieve focus. He has now used a Barlow without the lens and is getting focus so definitely needs that extra piece.
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I love NGC 457 great cluster and you can spend hours just looking at doubles and multiple star's here.
Great report nice read.
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Nick has transformed my viewing until I had met him I had been using "Turn left to Orion" looking for the galaxies.
Disappointed at my lack of seeing anything apart from M45 and M42 I was about to pack it all in.
So when I met him he put me on the track of clusters and double and multiple star's,
This renewed my interest and now having the EQ5 and two refractors on clear nights I am spoiled for choice of the thousands of objects I care to view now I am in my element.
So it's all thanks to Nick who I cannot thank enough.
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I had cloud cover again nice report Stu glad someone got out.
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3 weeks today people lets hope it dry`s up. Still time for people to book and join us there.
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I've just got it cloud already building though😢
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Another good "Winter Alberio"
H3945
RA. 07h 16m.6 DEC - 23° 19
(SAO 1733 53)
Hass says bright citrus orange and a royal blue lovely double
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Use insulation tape to reorientate the mirror cell with the tube. I. E put insulation tape on the tube and the cell at the same place.
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I will be there been every year except last year as they didn't have one 20 minutes down the road.
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36 minutes ago, RobH2020 said:
Hmm so maybe i don't need a moon filter after all if i can just do this!
If we're reducing the aperture by using that little cap, that massively increases the f ratio of the scope right? What are the implications of that?
As far as I know makes no difference looking at the moon you would just be able to see the craters and mares rather than a blinding light.
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17 minutes ago, RobH2020 said:
Oh is that what that's for?? I wondered why it has that! Why do you want to reduce the aperture, just for looking at the sun?
NEVER ever look at the sun unless you have appropriate film over the opening, you reduce the aperture mainly to let less light in E.G when you have a full moon
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If you live in light polluted area dont think you are going to see galaxies galore in technicolor you wont, you will only be able to see the brighter ones M81,M82, Andromeda when that comes back(M31) look for clusters both globular and open as well as double stars.
The galaxies will be grey but clusters have different coloured stars and so do the double and multiple stars leave the galaxy hunting for dark sky areas this will make you enjoy the hobby and not put you off when you cannot see anything.
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They look to big think you only need around 16mm and they need to have more tension than what they look like they have, you need something more like this
If you look at these it will give you some idea,
https://www.cameraconcepts.com/bobs-knobs-primary-mirror-springs-for-many-common.html
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3 months nearly since I have been out weather has been terrible everytime set up cloud rolled in frustrating is not the word. Puppis is a no go for me I have houses all around and 3 story ones at the back of me I am lucky see anything.
Great report Nick I wont be copying your Puppis targets as explained 😪
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46 minutes ago, mapstar said:
Just got the camera Paul so only a few photos
What a shame have get yourself a small set up so you can take that instead of the big dob.
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Hope the weather stays good for you and you get some sessions in.
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HEQ5 upgrade bolts
in Getting Started Equipment Help and Advice
Posted
I would cut 10mm off that bolt then try it again if it still catches but is very close cut another 5mm then that should fit. Saves money takes a couple of minutes.