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Neil H

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Posts posted by Neil H

  1. 2 hours ago, johninderby said:

    Just very Japanese and for a scope intended for the Japanese market. 🙄

    So looking at the picture if you can't see a train in space the telescope must be broken then , strange picture

  2. 2 hours ago, Cornelius Varley said:

    It depends on how you define "faster". All stars rotate around the celestial poles at the same angular velocity (15 degrees/hr), those further away from the poles may appear to be moving "faster" but this is only because they are further from the centre of rotation. 

     

    So it's like a record on a player outer looks fast then the centre but it's all the same speed I never thought about like that 

  3. Hi all I have a ASL 224 MC  camera I ordered the wrong IR filter I got a pass not a cut , the guy at the telescope house said that this filter is better for planets when they are low as they are now and a cut filter will be better when they are high up , so I ordered a IR cut filter so I have both now my questions are 

    Do you ever use a IR pass filter ? What sort of photo will you get ?

    will it be better on planets low in the sky ?

    this is the email I got 

    Hi Neil,

     

    Apologies you haven't heard back from us - we are incredibly busy currently.  Unfortunately the order has actually gone out already.  You're welcome to return the filter if you want.

     

    The filter you've bought actually matches the 224 extremely well.  While it’s not a conventional IR filter and we can certainly swap it over for one if you want to return it, I would actually recommend sticking with this filter as well - it’s veryuseful and will allow you to do a lot more with the camera, especially during the permanent astronomical twilight we're experiencing in the UK for the next couple of months.  This filter allows you to use the full resolution of the camera for IR and near IR imaging.  This is really useful when trying to combat poor seeing conditions you get when imaging planets lower down towards the horizon - ideal for where Jupiter and Saturn are currently located in the sky.  While a conventional IR filter like this one:

     

    https://www.telescopehouse.com/accessories/filters/imaging/ir-cut-filter-1-25.html

     

    will certainly help to tighten things up a little when dealing with brighter targets, it does depend what design of telescope you’re using as to the efficacy of using a fairly gentle low pass filter like this - what's your main telescope?

     

     

     
  4. the belt height seem to be more controlled by the idler pulley so you need to get the gears to run in line but the larger gear will make the belt run high or low , the larger  gear can be moved on the shaft or place washers between the motor and mounting plate to make motor sit deeper in the housing , Rowan did send washers out to a customer who was having this problem

    But all I did was move the large gear out about 0.5 of a mm  on the motor shaft so when I run the mount the belt did not ride up towards the cover that fits on top, it may take a few tiny adjustments till it runs as you want it 

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  5. Hi all i have ordered  the ZWO ASL 224 MC camera i also ordered  the IR cut filter but just look back at email i was sent it says ZWO 850mn IR PASS FILTER

    Is the wrong one coming or is this what i need 

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