Re: Bill please

Hi Doink,

If you are interested in DSO's, a Newtonian may be a better choice.
They offer better wide field views than the SCT and larger aperture (for
the price) than the apo.

In the C9.25 vs Tak102 case, surely aperture wins in every aspect except
wide field views. I have the C9.25 but not the Tak102 but I have
looked through many high end 4" apos including the Tak102. The Tak102
can never outperform the C9.25 (except for wide field views as I
mentioned earlier).

Last night I viewed Saturn with a cheap Chinese Mak90 and a Tak60.
Surely, the view in the Tak60 is more contrasty but I can only see the
whole Cassini division with the Mak90. The cost of the Tak60 OTA is
about 4 times that of the Mak90. This a proof of the aperturer rule.

C. H. Yeung
from Hong Kong (one of the most light-polluted city)


Doink wrote:

> Hi Bill,
>
> Yes, I think the Tak is much better quality. I'm not doing
> astrophotography, only visual. I like to see things. Things like the Veil,
> M57, M46, 47---these get pretty obscure in small aperture so my thought was
> that bigger aperture would be better. Everything I've read about the
> Celestron 9.25 is positive. The quality of a Tak 102 is undisputable. But
> which will show me more? Is the wider field and better contrast an offset
> to bigger aperture though smaller FOV?
>
> Doink
>
> "William McHale" <mchale@xxxxxxxxxxxxxx> wrote in message
> news:OIV8e.12$LS5.922@xxxxxxxxxxxxxxx
>
>>Doink <skyman102a@xxxxxxx> wrote:
>>
>>>Aperture win this showdown? Which to buy---let's assume you could get
>>>either for the same $$$$$
>>
>>Well strictly going by how much you will see in the scope.. yeah aperature
>>would win. But you will get much larger and nicer wide field views in the
>>Tak and the mechanical quality of Takahashi scopes is beyond reproach.
>>And if you can get a Tak for the same money as a C9.25, then buy it, and
>>then
>>you can sell it for more money than it costs to get a c9.25 OTA :).
>>
>>--
>>Bill
>>
>
>
>
.

Relevant Pages

  • Re: Celestron 9.25 Vs. Tak 102
    ... I would personally prefer the much larger aperture of the 9.25 over the Tak. ... difference in aperture is worth the sacrifice in quality. ... The Mighty Light of ten thousand suns ...
    (sci.astro.amateur)
  • Re: Bill please
    ... > Hi Doink, ... > They offer better wide field views than the SCT and larger aperture (for ... > from Hong Kong (one of the most light-polluted city) ... The quality of a Tak 102 is undisputable. ...
    (sci.astro.amateur)
  • Re: Looking for Opinions on Takahashi Epsilon Astrographs
    ... > Tak is getting ready to introduce the Epsilon 180, ... > expensive DSLR accessories. ... The f/2.8 speed and aperture are positives, ... have you checked the Uncensored Tak group on Yahoo? ...
    (sci.astro.amateur)
  • Re: Splitting Sirius
    ... The importance of the fact that both of the scopes cited above are extremely high quality should not be underestimated. ... While its true that poor optics or poor collimation will make it very difficult to observe the Pup, in my experience there is little to be gained from the additional expense of high end optics. ... This is particularly true when an expensive small aperture scope is compared to a larger aperture instrument of good quality. ...
    (sci.astro.amateur)
  • Re: nikon d40
    ... Try saving a copy of an image with graded sky at a very low jpeg quality setting in any program and you will see what this looks like. ... For example, I just tried P mode & set the aperture wide open to f/2.8 then moved around to different parts of the room and after a while, it changed the aperture back to f/5.6. ... If you rotate the dial one way or the other, it uses a 'somewhat' faster or slower shutter speed but if the lighting changes, you can't really predict where it will land. ... Likewise, manual mode is useful where you want even more control, A or S keep changing the numbers against your will when lighting changes a bit and that can be frustrating but at least *both* numbers aren't slip sliding around in an unpredictable way. ...
    (rec.photo.digital.slr-systems)