Member Night at CRO - January 6

The next member night at CRO is on Saturday, January 6.

Sunset is at 1733 (5:33pm). Nautical twilight begins at 1800. Astronomical twilight begins at 1832. Twilight ends and true night begins at 1903.

The moon sets before sunset and doesn’t rise until 0353. It should be a great night for observing, weather permitting!

Watch the weather forecasts and here on the forum to find out if the viewing will be good that night!

If anyone is coming that can open the 14” or 30” scopes, please post on here that you will be attending and it will be open.

If you’re planning to come out, please post on here that you are coming.

If you want to be guided to CRO, please post here and check back to see if a CRO member can meet and guide you. CRO members, please post what time you can meet any members needing guides. Please make arrangements to meet directly with whoever will be guiding you.

The location of the observatory is also now searchable in both Google Maps and Apple Maps. Search for Cheddar Ranch Observatory, Watonga, OK, and it should appear and give you directions if you want. It might also appear in your GPS app/program.

Clear and dark skies!


Weather permitting, I would like to go!

Sadly, the forecasts are not looking good right now. Be sure to check back here before you leave on Saturday to ensure that CRO will be open.

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Well, this is Oklahoma and forecasts can change quickly! Now it looks like it’ going to clearing right around sunset and will be clear to at least midnight.

The wind will be light, but the temps will be cold! Predicted to be about 37F at 1800, dropping to around 27F before midnight. So if you come out, be prepared! The building is available for warming up, but you can’t see the stars from inside the building!

Sadly I will not be able to go out tomorrow night, so if another CRO is able to open it up for our non-CRO members, please post on here that you will, and what time you’re planning on opening.

Non-CRO members: check back here before you leave tomorrow to ensure that the weather forecast hasn’t changed (again) and CRO will be open! Do not go out if no one has volunteered to open it!

I will keep an eye on the weather. If things look ok i will head out to cro.

Unfortunately my weekend plans have changed and will not be out there either.

So far my weather app is saying its supposed to clear up between 6 and 7 tonight. If this holds i will head out and open up CRO for non members. If you need a guide let me know and i will be happy to help.
Sunset is at 5:35 so i will plan to get there around 5:00.

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Thanks for opening CRO tonight, Chris! It looks like it should be excellent there tonight!

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I’m also planning to stay the night at CRO tonight. I plan to run two of my rigs from a pad and car camp overnight. So, the facility will be open all night and any visitors can stay as long as they want or even overnight like I do.

I plan on being there around 5. I’ve been a member three months now and would like to check out a club telescope if anyone can help with that.

I’m bringing my star adventurer mount and DSLR.

Ben, contact Chris Petrof at to check out a club telescope.

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CRO is open

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Was an excellent but cold night at CRO. I was running my seestar while using the spare peir in the roll off room. Andy had his two astrophotography rigs up and running. Ben was testing out his new star adventurer 2i. We all photographed different parts of orion then Andy showed us some tricks in pixinsight and photoshop.


Sounds like it was as great as predicted! I wish I could have gone out last night!