AstroMuni

Already posted my opinion Ed

1 hour ago, malc-c said:

My advice would be to save and save until you can afford a decent scope on a better mount. 

+1 to that advice. @Alexmar what is your budget. I can see that Celestron does sell in Brazil https://www.celestron.com.br/telescopios

16 minutes ago, Alexmar said:

That is a realy good tool, thanks man. Also, dont make sense to me lol, i will have to do some research to undertand that event.

Here is what you can hope to see with the various scopes you have listed. I have assumed you are imaging with a Canon 600D. But you can change your camera or eyepiece and see what it does to your image.

10 hours ago, Alexmar said:

Also, i have a question, why long focal lenght is bad for deep space? i know it shortens the FOV, but would be simple just to zoom out a little bit?

Welcome to SGL. You are partly right. But if you have a camera your 'zoom' is only defined by the FL of the objective (as there is no eyepiece in between) and as a result some objects may not fit into your view at all. Hope this makes sense.

As they say get the largest aperture that you can buy as you need to gather as much light as you can and FOV is a factor of both aperture and FL.
Here is a tool to help you visualise https://astronomy.tools/calculators/field_of_view/

5 minutes ago, ollypenrice said:

Glad you liked it. I haven't seen it on paper yet

Helps to be in UK atleast to receive AN earlier 😉

5 hours ago, Uncleslimjim said:

I have an older 114x900 feractor, I replaced both mirrors and bought all new lenses.

Hi and welcome to SGL. Pls post an image of your scope so we can help you better. The only time I have seen such double images is if I am viewing from inside the house through our glass windows. As others have said look out for any reflective surfaces in the optical train. This could be lenses or reflective surfaces.

20 hours ago, ollypenrice said:

Io, Europa, Ganymede and Callisto are, respectively I, II, III  and IV.

Olly

Great article on Mounts, btw 👍

2 hours ago, Giles_B said:

Now I'm thinking about mounts again, I'm confused as to whether the weight limits given for EQ mounts would apply to an alt-az setup (I'm not interested in imaging, so can't imagine why I'd need an EQ mount), but there don't seem to be any "big" alt-az mounts. Why?

One reason I can think of is that an EQ mount can be readily converted to an AZ mount. Read this post

18 hours ago, Crossway said:

My query is about upgrading......... 

As you are using it for terrestrial viewing the 20mm erecting eyepiece works best, but has poor eye relief. The other options said above eg. BST and other wide angle eyepieces are great but on their own would invert the image. You can ofcourse make use of the erecting prism in your 20mm to help convert these to right side up images. Check this video

Its great to see M27 from a different perspective. You have captured the gas bubble very well.

On 19/07/2022 at 19:19, sorrimen said:

Need to buy a 1.25” nosepiece for my new asi224.

If you purchased this new, it should have come with nosepiece adapter. Atleast mine did.

1 hour ago, Jimbo Lpool said:

Nice images Muni i have managed to get one decent image using the scope and am in the process looking out for a 2nd hand goto mount, as you`ll know the 130 is a very light scope but clumsy, i`v been offered a Celestron 90SLT Maksutov-Cassegrain and thinking of buying it and swapping it as my main, but not sure if it`s better than what i already have and use ??

If I were you I would stick to the 130 and put money into getting a good stable mount, something like the SW EQ5. I personally would NOT opt for the 90SLT unless you are after imaging planets where it maybe better than your 130. Read this review on the 90SLT https://telescopicwatch.com/celestron-nexstar-90slt-review/

I agree its not the most intuitive of software, but hey a lot of software is just that way... I simply followed the steps in https://siril.org/tutorials/tuto-scripts/
before it started making sense.

38 minutes ago, Varavall said:

I have now had a look at Siril and after spending 2 hours of my life that I will never see again, I uninstalled it. It doesn't resonate with me, I'll look for some other software that I find intuitive. Horses for courses and this one isn't mine.

Sorry to hear that. Did you read the tutorials or went straight for it 🙂 Have a read here https://siril.org/tutorials/

On 15/07/2022 at 21:35, Jimbo Lpool said:

as it seems they ment the 130pds reflector not the one i got, and i have seen some of the images on here of the images members have got with their`s and they are amazing,

Dont worry, you should get pretty decent images with what you have. SW & other vendors have enough models to confuse us folk 🙂 I have a Celestron Astromaster 130 and if you read its reviews for AP they say its useless. But my experience showed me that its not too bad after all and I continue to use it. See my signature link for details.

On 11/07/2022 at 11:48, Varavall said:

Any comments and suggestions as to the best Ha:Oiii:Sii ratio of subs for this target and useful critical comments regarding the image are more than welcome.

I use a free tool called Siril for stacking and processing my images. Here is their tutorial for this https://siril.org/tutorials/rgb_composition/

14 hours ago, heathenwoods said:

've come to realise just how powerful levels and curves are! I think I've got all the curves more or less in the same place now and it's been fun trying to push just a little bit more detail out of the core. It's been amazing to see what a huge difference three astute tips made

Its looking good now. Try the new GHT (generalised hyperbolic transform) tool in Siril rather than the Histogram transform. You have better control and can get better results.

50 minutes ago, ninjageezer said:

do you guys use pixinsight to stack or dss ?

I use Siril

On 04/07/2022 at 13:43, Carbon Brush said:

Call up your favourite sky map software on your computer.

I was about to suggest something similar.... @imtrappin Use an app on your phone to check if the scope is pointing in same general direction as what the app says. I like an app called SkEye which has a push-to functionality but you can use any app of your choice.

23 hours ago, Bigwings said:

My kind friends bought it for my Birthday but getting it to focus on the laptop has been difficult

I am guessing its the ASI120MC-S that you are using. I have the ASI224MC which has a backfocus of around 12.5mm so I would guess that yours would be in similar range. I use mine on my Astromaster 130 which again is quite similar to your SW 130 so you should be able to achieve focus by moving the focuser knob during daytime. BTW, I dont need to add spacers but yours may need them as it uses a shortened tube. Dont add the diagonal, just attach the camera straight on to focuser. Use the ASI provided software or Firecapture/Sharpcap to help get a continuous view.

13 hours ago, ninjageezer said:

if i put a link to the folder with the light frames in would anyone be willing to look at the data for me please

Just go ahead. Plenty of folk around here to help 🙂 Also post an image of what you managed to achieve with PI

5 hours ago, SkyblockCEO said:

I'm very new to astronomy, but also a bit of a nerd and don't mind figuring the details out. I've been wanting a telescope for quite a while now, but I don't have a big budget.

Welcome to SGL. If you specify what is your budget then folk here can provide better guidance. Between the 2 scopes you have come across the Celestron is the better one but as Cornelius V has mentioned, it has its issues.

My suggestion is take a look at other posts here as well on advice given to others on buying new scopes before taking the plunge into buying one. If there is a local astro club join that first.

15 minutes ago, Simon Pepper said:

I will report back my findings once it arrives.

Good luck!

11 hours ago, Dave2292 said:

It's strange I had recent issues with Cartes du ciel. where I would sync on a star, slew to my target for the night and take a test shot but it would so far off.  It was working fine for a good year with Cartes du ciel with a lynx astro cable and a year before that using the handset.

Thats interesting. If you have the lynx astro cable then you should be able to use platesolving to get accurate go-to positioning. Check if some parameters have changed such as incorrect date or location.

Are you planning on manually stitching the images together using Gimp?