Hello!! It's Joseph

meat: New Zealand ribeye steak from 和興行 . 1/2 inch thick, choice grade. preparation: sprinkle a few grains of salt on both side. Defrost at room temperature sous vide: target for medium rare, set at 55 deg C for 2 hours after 2 hours, take out the steak, and sear both sides, to get slight char grill. This also help to stop the juice coming out  tasting note: very good texture, easy to chew and cut, medium rare quality. The steak is very good quality at this price ( ~ $5x per steak) overall score: 85 What will you do next time try thicker steak, eg 1 1/2 inch try to coat the raw steak with flour, and sear a bit to stop the amount to juice loss keep same cooking temperature and time Try for medium done: 63 deg C, for 1:00 hour

Chinese Xuan paper 宣紙 Japanse Washi 和紙

 Without any change to the polar scope, the error can be reduced to 8' to 10' ( 1/4 to 1/5 of 40 min polaris-NCP angular distance) . Some can achieve even smaller errors, YMMV. I am using TV aerial method set the polar scope, so that one of grub screw is at 12 o'clock. only adjust the other 2 grub screw in each cycle horizontal ( 3 o'clock , 6 o'clock) and then vertical direction( 12 o'clock and 6 o'clock). turn the scope 120 degrees, so that the other grub screw is at 12 o'clock repeat above steps as many as you can Now change the grub screw with M3 x 10mm thumb screw, the error is reduced  4' to 5 ' ( 1/8 to 1/10 of 40  min polar-NCP angular distance but still, when  you rotate the scope, the field is rotated together with the rotation. So far the main drawbacks of existing design are: Need to rotate the polar scope, which is held in place by 3 magnets. The polar scope arm flexure . There is no way to keep the polar scope ...

spec

shot at PTC 18~135mm zoom @132mm F5.6 ISO800 3 min x 7 subs resized to 25% to make the star without trails is always challenging done: polar scope is better collimated , so that error is 5' to 10' ( 1/4 to 1/5 of 40 min polaris-NCP angular distance) . Now using , done based on astronomyshed's method use sturdier tripod things to do: to further reduce the polar scope error, the scope still have "cone error" , reasons can be - the polar scope optics not in good optical alignment, - the polar scope arm is not always orthogonal to the polar scope, when the polar scope is rotated - something else. All in all, whether the polar scope arm is in parallel to RA axis of the mount, is another question  change the grub screw to big heard thumb screw use drift method to increase accuracy

Type 304 : Aside from having a higher content of chromium than most other types of stainless steel, type 304 also contains nickel; this enables it to withstand most ordinary corrosion in architecture, is durable in typical food processing environments, and resists most chemicals. Type 316 : Similar to type 304, but also contains a small amount of molybdenum, which is an alloy element #304 does not contain (but one that provides even stronger resistance to some deterioration). Types 304 and 316 are grades of stainless steel that are most often used in plumbing , as well as in the manufacturing of kitchen utensils and sinks . Type 409 : Does not contain virtually any nickel at all, but also is the stainless steel that contains the least amount of chromium. Type 409 is more suitable for high temperature applications, which is why it's often used in automotive trim and exhaust systems , or hot water tanks . Type 410 : Also does not contain any significant nickel; its primary difference...