The #12 and #82A should work well. Although the #23A sometimes requires a bit of aperture or a fast scope IMO.

 

I wonder if that 203mm Orion's Synta or GSO?

GSO Filter Transmission Percentages

AD050 #58 Dark Green 24% T

AD051 #56 Light Green 53% T

AD052 #38A Dark Blue 17% T

AD053 #80A Medium Blue 30% T

AD054 #82A Light Blue 73% T

AD055 #15A Dark Yellow Filter 67% T

AD056 #12 Deep Yellow 74% T

AD057 #8 Light Yellow 83% T

AD058 #11 Yellow/Green Filter 78% T

AD059 #25 Red 14% T

AD060 #23A Light Red Filter 25% T

AD061 #47 Violet 3% T

AD062 #21 Orange 46% T

AD063 #29 Dark Red Filter 7% T

AD083 #96ND 50% T – Density 0.3

AD084 #96ND 25% T – Density 0.6

AD085 #96ND 13% T – Density 0.9

25% isn't a high transmission rate.

 

Yeah, it's worth a shot, Mars is bright. Synta and GSO are technically Taiwanese owned companies. I doubt there's much between their respective Newtonians. My 150mm TS Optics Newt' is GSO.

 

FWIW if I had to recommend just three Wratten filter colours, they'd be the #8, #11 and #82A.

 

Now the question rears it's pointy, little head: What happens if you screw the #82A into the #12 Yellow? What percentage of transmission is created?

 

Congratulation @Pleiades with the purchase of the #23a and the #12. Many of these filters will produce results, some people say they just change the color of things I strongly disagree. I am starting to see more people liking them then people disliking them.

I had very interesting results with the #23a on Venus has discussed here before, it helped very much to see some clouds shades. The #12 Yellow, I need to test it further but it's a good one on the moon for light dimming. They all dim the light of the moon at some point but some are much more effective then others depending of their transmission (and color), For the moon. I am sure you will like #23a and #12. Has for me I need to continue testing these filters extensively.

To this day, my strongest color filters were:

80a blue on Jupiter (I prefer it over the 82a because it's a bit darker, more effective)
38a Dark blue on the moon and jupiter (For full moon observation and to reveal pale spots on the moon and jupiter)
23a Light red incredible on Venus for the clouds.
21 Orange very good on the moon for the dark shadings.
11 Yellow Green incredible for all features on Saturn. (Especially the planet I find, more then the rings)
12 Yellow very comfortable on the moon has a replacement for a moon filter.

A nice inexpensive little treat.

=====================

What's happening with your 6" Newtonian on Dobson mount, you don't like it anymore?

 

FWIW if I had to recommend just three Wratten filter colours, they'd be the #8, #11 and #82A.

Hey i don't have the #8.

 

Ahhh oki, yes, you need another telescope I see why.

 

I use it as a fringe killer sometimes, but it is overall a good contrast filter on any type scope, especially around 13cm and under. It's always a good policy to have all three yellow Wratten colours.

 

You are right! Not a waste to own 3 of them especially at the price they sell them... I wonder if these products will be parts of the current or upcoming US sanctions.

 

Yellow filters are always important IMO, having the #8, #12, #15 and the Baader Yellow Longpass 495nm gives you a lot of flexibility in varying conditions.

[A portion of this post was deleted by a site moderator to remove unrelated content].

 

[A portion of this post was deleted by a site moderator to remove unrelated content].

Go ahead and finish-up your yellow-collection: #8, #11, #12, & #15. You'll be glad you did! At $13/ea. there isn't too far wrong you can go.

 

Yeah - you're right. It's just the events of this last were so momentious, we're literally surrounded by it on everything from the radio to the post-man!

But I'll chill from now on. I'm sure Mak will as well - as the UK is still intact.

My apologies to you personally.

Take Care -

Now back to our regularly scheduled program.....

Ah! Thanks - I just remembered to transfer some info on these new Celestron Mars-Filter.

 

>>So is this site duel purpose? Political and astronomy?

Astronomy *only* please!

All political and non-astronomy posts in recent threads have been deleted.

Let's focus on what brings us all together here - our love of astronomy - and stay away from what might divide or distract us.

Thank you.

 

Speaking of Mars filters, I've been thinking about the Baader Semi-Apo, which is reputedly very good for Mars. Although my experience with it on Mars is limited. A Wratten #12 is probably the closest thing to the Semi-Apo. I may try some comparisons if more Mars features become prominent in a while. I think most minus cyan filters produce good results on Mars. The #11 Yellow Green impressed me during the last opposition. I also would recommend the Baader Neodymium, as it can be effectively stacked with other colours on a bright Mars.