[AZ-Observing] Re: Jupiter (unidentified feature?)
- From: Padraig Houlahan <pjhmx1@xxxxxxxxx>
- To: "az-observing@xxxxxxxxxxxxx" <az-observing@xxxxxxxxxxxxx>
- Date: Thu, 26 Feb 2015 10:16:58 -0700
Since the 'scars' are arc-like with similar curvature to Jupiter's edge, I
suspect some spatial filters are causing them.
P
Sent from my iPhone
> On Feb 26, 2015, at 9:14 AM, Stan Gorodenski <stanlep@xxxxxxxxxxxxx> wrote:
>
> Or could the scar be a stand of dust over the chip?
>
>
>> On 2/25/2015 8:11 AM, Padraig Houlahan wrote:
>> I think it's entirely likely these are imaging artifacts caused by various
>> filters. The bright spot, being close to a dark one, suggests excessive
>> contrast or some other such filter. As for the 'scar,' I was able to find a
>> similar pattern on the lower left which suggests it is noise and we see what
>> we want to see. The aggressive image processing needed to get good planetary
>> images will produce artifacts every now and then I think.
>>
>> PH
>>
>> Sent from my iPhone
>>
>>
>>> On Feb 25, 2015, at 2:45 AM, Derrick Lim<antaresv@xxxxxxxxx> wrote:
>>>
>>> Hello,
>>> A friend of mine in Kuala Lumpur, Malaysia imaged Jupiter around 17:06 UTC
>>> (1:06am local Malaysian time) on Feb 22nd and recorded an interesting
>>> feature. I've helped him posted his image on spaceweathergallery.com, but
>>> would also like to see what anyone here thinks of what the feature might
>>> be.
>>>
>>> With words, it looks like a disturbance extending from about 80 degree
>>> north latitude to 20 degrees north where it ends in a bright splotch.
>>>
>>> The photos can be found here:
>>>
>>> http://spaceweathergallery.com/indiv_upload.php?upload_id=109234&PHPSESSID=19ouh96a8ip6ecu4uqtf84sfg1
>>>
>>> Any help is appreciated. Thank you!
>>>
>>> Derrick Lim
>>>
>>>
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