The optimus vega gas stove is a high performance and lightweight remote canister cooker which can be used with a standard gas cartridge for year round camping this lightweight stove has an integrated 4 season mode which means you can use it when temperatures plummet and here39s the science bit usually gas cartridges become inefficient under 5 degrees which is no good when you39re stuck up the mountain without dinner the vega works on the idea that the bottom of the gas caniste